991 lines
26 KiB
YAML
991 lines
26 KiB
YAML
command: docker create
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short: Create a new container
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long: |-
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The `docker create` command creates a writeable container layer over the
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specified image and prepares it for running the specified command. The
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container ID is then printed to `STDOUT`. This is similar to `docker run -d`
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except the container is never started. You can then use the
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`docker start <container_id>` command to start the container at any point.
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This is useful when you want to set up a container configuration ahead of time
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so that it is ready to start when you need it. The initial status of the
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new container is `created`.
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Please see the [run command](run.md) section and the [Docker run reference](../run.md) for more details.
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usage: docker create [OPTIONS] IMAGE [COMMAND] [ARG...]
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pname: docker
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plink: docker.yaml
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options:
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- option: add-host
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value_type: list
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description: Add a custom host-to-IP mapping (host:ip)
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: attach
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shorthand: a
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value_type: list
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description: Attach to STDIN, STDOUT or STDERR
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: blkio-weight
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value_type: uint16
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default_value: "0"
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description: |
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Block IO (relative weight), between 10 and 1000, or 0 to disable (default 0)
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: blkio-weight-device
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value_type: list
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default_value: '[]'
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description: Block IO weight (relative device weight)
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: cap-add
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value_type: list
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description: Add Linux capabilities
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: cap-drop
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value_type: list
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description: Drop Linux capabilities
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: cgroup-parent
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value_type: string
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description: Optional parent cgroup for the container
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: cidfile
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value_type: string
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description: Write the container ID to the file
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: cpu-count
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value_type: int64
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default_value: "0"
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description: CPU count (Windows only)
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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os_type: windows
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- option: cpu-percent
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value_type: int64
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default_value: "0"
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description: CPU percent (Windows only)
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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os_type: windows
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- option: cpu-period
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value_type: int64
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default_value: "0"
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description: Limit CPU CFS (Completely Fair Scheduler) period
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: cpu-quota
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value_type: int64
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default_value: "0"
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description: Limit CPU CFS (Completely Fair Scheduler) quota
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: cpu-rt-period
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value_type: int64
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default_value: "0"
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description: Limit CPU real-time period in microseconds
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deprecated: false
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min_api_version: "1.25"
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: cpu-rt-runtime
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value_type: int64
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default_value: "0"
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description: Limit CPU real-time runtime in microseconds
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deprecated: false
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min_api_version: "1.25"
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: cpu-shares
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shorthand: c
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value_type: int64
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default_value: "0"
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description: CPU shares (relative weight)
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: cpus
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value_type: decimal
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description: Number of CPUs
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deprecated: false
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min_api_version: "1.25"
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: cpuset-cpus
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value_type: string
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description: CPUs in which to allow execution (0-3, 0,1)
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: cpuset-mems
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value_type: string
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description: MEMs in which to allow execution (0-3, 0,1)
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: device
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value_type: list
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description: Add a host device to the container
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: device-cgroup-rule
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value_type: list
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description: Add a rule to the cgroup allowed devices list
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: device-read-bps
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value_type: list
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default_value: '[]'
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description: Limit read rate (bytes per second) from a device
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: device-read-iops
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value_type: list
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default_value: '[]'
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description: Limit read rate (IO per second) from a device
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: device-write-bps
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value_type: list
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default_value: '[]'
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description: Limit write rate (bytes per second) to a device
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: device-write-iops
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value_type: list
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default_value: '[]'
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description: Limit write rate (IO per second) to a device
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: disable-content-trust
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value_type: bool
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default_value: "true"
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description: Skip image verification
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: dns
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value_type: list
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description: Set custom DNS servers
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: dns-opt
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value_type: list
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description: Set DNS options
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: dns-option
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value_type: list
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description: Set DNS options
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: dns-search
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value_type: list
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description: Set custom DNS search domains
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: domainname
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value_type: string
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description: Container NIS domain name
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: entrypoint
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value_type: string
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description: Overwrite the default ENTRYPOINT of the image
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: env
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shorthand: e
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value_type: list
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description: Set environment variables
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: env-file
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value_type: list
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description: Read in a file of environment variables
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: expose
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value_type: list
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description: Expose a port or a range of ports
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: gpus
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value_type: gpu-request
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description: GPU devices to add to the container ('all' to pass all GPUs)
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deprecated: false
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min_api_version: "1.40"
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: group-add
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value_type: list
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description: Add additional groups to join
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: health-cmd
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value_type: string
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description: Command to run to check health
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: health-interval
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value_type: duration
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default_value: 0s
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description: Time between running the check (ms|s|m|h) (default 0s)
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: health-retries
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value_type: int
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default_value: "0"
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description: Consecutive failures needed to report unhealthy
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: health-start-period
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value_type: duration
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default_value: 0s
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description: |
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Start period for the container to initialize before starting health-retries countdown (ms|s|m|h) (default 0s)
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deprecated: false
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min_api_version: "1.29"
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: health-timeout
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value_type: duration
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default_value: 0s
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description: |
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Maximum time to allow one check to run (ms|s|m|h) (default 0s)
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: help
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value_type: bool
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default_value: "false"
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description: Print usage
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: hostname
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shorthand: h
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value_type: string
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description: Container host name
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: init
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value_type: bool
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default_value: "false"
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description: |
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Run an init inside the container that forwards signals and reaps processes
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deprecated: false
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min_api_version: "1.25"
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: interactive
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shorthand: i
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value_type: bool
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default_value: "false"
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description: Keep STDIN open even if not attached
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: io-maxbandwidth
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value_type: bytes
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default_value: "0"
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description: |
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Maximum IO bandwidth limit for the system drive (Windows only)
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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os_type: windows
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- option: io-maxiops
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value_type: uint64
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default_value: "0"
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description: Maximum IOps limit for the system drive (Windows only)
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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os_type: windows
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- option: ip
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value_type: string
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description: IPv4 address (e.g., 172.30.100.104)
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: ip6
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value_type: string
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description: IPv6 address (e.g., 2001:db8::33)
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: ipc
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value_type: string
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description: IPC mode to use
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: isolation
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value_type: string
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description: Container isolation technology
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: kernel-memory
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value_type: bytes
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default_value: "0"
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description: Kernel memory limit
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: label
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shorthand: l
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value_type: list
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description: Set meta data on a container
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: label-file
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value_type: list
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description: Read in a line delimited file of labels
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: link
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value_type: list
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description: Add link to another container
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: link-local-ip
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value_type: list
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description: Container IPv4/IPv6 link-local addresses
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: log-driver
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value_type: string
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description: Logging driver for the container
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: log-opt
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value_type: list
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description: Log driver options
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: mac-address
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value_type: string
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description: Container MAC address (e.g., 92:d0:c6:0a:29:33)
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: memory
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shorthand: m
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value_type: bytes
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default_value: "0"
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description: Memory limit
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: memory-reservation
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value_type: bytes
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default_value: "0"
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description: Memory soft limit
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: memory-swap
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value_type: bytes
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default_value: "0"
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description: |
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Swap limit equal to memory plus swap: '-1' to enable unlimited swap
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: memory-swappiness
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value_type: int64
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default_value: "-1"
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description: Tune container memory swappiness (0 to 100)
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: mount
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value_type: mount
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description: Attach a filesystem mount to the container
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: name
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value_type: string
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description: Assign a name to the container
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: net
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value_type: network
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description: Connect a container to a network
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: net-alias
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value_type: list
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description: Add network-scoped alias for the container
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: network
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value_type: network
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description: Connect a container to a network
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deprecated: false
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experimental: false
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experimentalcli: false
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kubernetes: false
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swarm: false
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- option: network-alias
|
|
value_type: list
|
|
description: Add network-scoped alias for the container
|
|
deprecated: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: no-healthcheck
|
|
value_type: bool
|
|
default_value: "false"
|
|
description: Disable any container-specified HEALTHCHECK
|
|
deprecated: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: oom-kill-disable
|
|
value_type: bool
|
|
default_value: "false"
|
|
description: Disable OOM Killer
|
|
deprecated: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: oom-score-adj
|
|
value_type: int
|
|
default_value: "0"
|
|
description: Tune host's OOM preferences (-1000 to 1000)
|
|
deprecated: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: pid
|
|
value_type: string
|
|
description: PID namespace to use
|
|
deprecated: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: pids-limit
|
|
value_type: int64
|
|
default_value: "0"
|
|
description: Tune container pids limit (set -1 for unlimited)
|
|
deprecated: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: platform
|
|
value_type: string
|
|
description: Set platform if server is multi-platform capable
|
|
deprecated: false
|
|
min_api_version: "1.32"
|
|
experimental: true
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: privileged
|
|
value_type: bool
|
|
default_value: "false"
|
|
description: Give extended privileges to this container
|
|
deprecated: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: publish
|
|
shorthand: p
|
|
value_type: list
|
|
description: Publish a container's port(s) to the host
|
|
deprecated: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: publish-all
|
|
shorthand: P
|
|
value_type: bool
|
|
default_value: "false"
|
|
description: Publish all exposed ports to random ports
|
|
deprecated: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: read-only
|
|
value_type: bool
|
|
default_value: "false"
|
|
description: Mount the container's root filesystem as read only
|
|
deprecated: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: restart
|
|
value_type: string
|
|
default_value: "no"
|
|
description: Restart policy to apply when a container exits
|
|
deprecated: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: rm
|
|
value_type: bool
|
|
default_value: "false"
|
|
description: Automatically remove the container when it exits
|
|
deprecated: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: runtime
|
|
value_type: string
|
|
description: Runtime to use for this container
|
|
deprecated: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: security-opt
|
|
value_type: list
|
|
description: Security Options
|
|
deprecated: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: shm-size
|
|
value_type: bytes
|
|
default_value: "0"
|
|
description: Size of /dev/shm
|
|
deprecated: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: stop-signal
|
|
value_type: string
|
|
default_value: SIGTERM
|
|
description: Signal to stop a container
|
|
deprecated: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: stop-timeout
|
|
value_type: int
|
|
default_value: "0"
|
|
description: Timeout (in seconds) to stop a container
|
|
deprecated: false
|
|
min_api_version: "1.25"
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: storage-opt
|
|
value_type: list
|
|
description: Storage driver options for the container
|
|
deprecated: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: sysctl
|
|
value_type: map
|
|
default_value: map[]
|
|
description: Sysctl options
|
|
deprecated: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: tmpfs
|
|
value_type: list
|
|
description: Mount a tmpfs directory
|
|
deprecated: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: tty
|
|
shorthand: t
|
|
value_type: bool
|
|
default_value: "false"
|
|
description: Allocate a pseudo-TTY
|
|
deprecated: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: ulimit
|
|
value_type: ulimit
|
|
default_value: '[]'
|
|
description: Ulimit options
|
|
deprecated: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: user
|
|
shorthand: u
|
|
value_type: string
|
|
description: 'Username or UID (format: <name|uid>[:<group|gid>])'
|
|
deprecated: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: userns
|
|
value_type: string
|
|
description: User namespace to use
|
|
deprecated: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: uts
|
|
value_type: string
|
|
description: UTS namespace to use
|
|
deprecated: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: volume
|
|
shorthand: v
|
|
value_type: list
|
|
description: Bind mount a volume
|
|
deprecated: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: volume-driver
|
|
value_type: string
|
|
description: Optional volume driver for the container
|
|
deprecated: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: volumes-from
|
|
value_type: list
|
|
description: Mount volumes from the specified container(s)
|
|
deprecated: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
- option: workdir
|
|
shorthand: w
|
|
value_type: string
|
|
description: Working directory inside the container
|
|
deprecated: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
examples: |-
|
|
### Create and start a container
|
|
|
|
```bash
|
|
$ docker create -t -i fedora bash
|
|
|
|
6d8af538ec541dd581ebc2a24153a28329acb5268abe5ef868c1f1a261221752
|
|
|
|
$ docker start -a -i 6d8af538ec5
|
|
|
|
bash-4.2#
|
|
```
|
|
|
|
### Initialize volumes
|
|
|
|
As of v1.4.0 container volumes are initialized during the `docker create` phase
|
|
(i.e., `docker run` too). For example, this allows you to `create` the `data`
|
|
volume container, and then use it from another container:
|
|
|
|
```bash
|
|
$ docker create -v /data --name data ubuntu
|
|
|
|
240633dfbb98128fa77473d3d9018f6123b99c454b3251427ae190a7d951ad57
|
|
|
|
$ docker run --rm --volumes-from data ubuntu ls -la /data
|
|
|
|
total 8
|
|
drwxr-xr-x 2 root root 4096 Dec 5 04:10 .
|
|
drwxr-xr-x 48 root root 4096 Dec 5 04:11 ..
|
|
```
|
|
|
|
Similarly, `create` a host directory bind mounted volume container, which can
|
|
then be used from the subsequent container:
|
|
|
|
```bash
|
|
$ docker create -v /home/docker:/docker --name docker ubuntu
|
|
|
|
9aa88c08f319cd1e4515c3c46b0de7cc9aa75e878357b1e96f91e2c773029f03
|
|
|
|
$ docker run --rm --volumes-from docker ubuntu ls -la /docker
|
|
|
|
total 20
|
|
drwxr-sr-x 5 1000 staff 180 Dec 5 04:00 .
|
|
drwxr-xr-x 48 root root 4096 Dec 5 04:13 ..
|
|
-rw-rw-r-- 1 1000 staff 3833 Dec 5 04:01 .ash_history
|
|
-rw-r--r-- 1 1000 staff 446 Nov 28 11:51 .ashrc
|
|
-rw-r--r-- 1 1000 staff 25 Dec 5 04:00 .gitconfig
|
|
drwxr-sr-x 3 1000 staff 60 Dec 1 03:28 .local
|
|
-rw-r--r-- 1 1000 staff 920 Nov 28 11:51 .profile
|
|
drwx--S--- 2 1000 staff 460 Dec 5 00:51 .ssh
|
|
drwxr-xr-x 32 1000 staff 1140 Dec 5 04:01 docker
|
|
```
|
|
|
|
|
|
Set storage driver options per container.
|
|
|
|
```bash
|
|
$ docker create -it --storage-opt size=120G fedora /bin/bash
|
|
```
|
|
|
|
This (size) will allow to set the container rootfs size to 120G at creation time.
|
|
This option is only available for the `devicemapper`, `btrfs`, `overlay2`,
|
|
`windowsfilter` and `zfs` graph drivers.
|
|
For the `devicemapper`, `btrfs`, `windowsfilter` and `zfs` graph drivers,
|
|
user cannot pass a size less than the Default BaseFS Size.
|
|
For the `overlay2` storage driver, the size option is only available if the
|
|
backing fs is `xfs` and mounted with the `pquota` mount option.
|
|
Under these conditions, user can pass any size less than the backing fs size.
|
|
|
|
### Specify isolation technology for container (--isolation)
|
|
|
|
This option is useful in situations where you are running Docker containers on
|
|
Windows. The `--isolation=<value>` option sets a container's isolation
|
|
technology. On Linux, the only supported is the `default` option which uses
|
|
Linux namespaces. On Microsoft Windows, you can specify these values:
|
|
|
|
|
|
| Value | Description |
|
|
|-----------|---------------------------------------------------------------------------------------------------------------------------------------------------------------|
|
|
| `default` | Use the value specified by the Docker daemon's `--exec-opt` . If the `daemon` does not specify an isolation technology, Microsoft Windows uses `process` as its default value if the
|
|
daemon is running on Windows server, or `hyperv` if running on Windows client. |
|
|
| `process` | Namespace isolation only. |
|
|
| `hyperv` | Hyper-V hypervisor partition-based isolation. |
|
|
|
|
Specifying the `--isolation` flag without a value is the same as setting `--isolation="default"`.
|
|
|
|
### Dealing with dynamically created devices (--device-cgroup-rule)
|
|
|
|
Devices available to a container are assigned at creation time. The
|
|
assigned devices will both be added to the cgroup.allow file and
|
|
created into the container once it is run. This poses a problem when
|
|
a new device needs to be added to running container.
|
|
|
|
One of the solution is to add a more permissive rule to a container
|
|
allowing it access to a wider range of devices. For example, supposing
|
|
our container needs access to a character device with major `42` and
|
|
any number of minor number (added as new devices appear), the
|
|
following rule would be added:
|
|
|
|
```
|
|
docker create --device-cgroup-rule='c 42:* rmw' -name my-container my-image
|
|
```
|
|
|
|
Then, a user could ask `udev` to execute a script that would `docker exec my-container mknod newDevX c 42 <minor>`
|
|
the required device when it is added.
|
|
|
|
NOTE: initially present devices still need to be explicitly added to
|
|
the create/run command
|
|
deprecated: false
|
|
experimental: false
|
|
experimentalcli: false
|
|
kubernetes: false
|
|
swarm: false
|
|
|