command: docker trust inspect
short: Return low-level information about keys and signatures
long: |-
  `docker trust inspect` provides low-level JSON information on signed repositories.
  This includes all image tags that are signed, who signed them, and who can sign
  new tags.
usage: docker trust inspect IMAGE[:TAG] [IMAGE[:TAG]...]
pname: docker trust
plink: docker_trust.yaml
options:
- option: pretty
  value_type: bool
  default_value: "false"
  description: Print the information in a human friendly format
  deprecated: false
  experimental: false
  experimentalcli: false
  kubernetes: false
  swarm: false
examples: |-
  ### Get low-level details about signatures for a single image tag

  Use the `docker trust inspect` to get trust information about an image. The
  following example prints trust information for the `alpine:latest` image:

  ```bash
  $ docker trust inspect alpine:latest
  ```

  The output is in JSON format, for example:

  ```json
  [
    {
      "Name": "alpine:latest",
      "SignedTags": [
        {
          "SignedTag": "latest",
          "Digest": "d6bfc3baf615dc9618209a8d607ba2a8103d9c8a405b3bd8741d88b4bef36478",
          "Signers": [
            "Repo Admin"
          ]
        }
      ],
      "Signers": [],
      "AdministrativeKeys": [
        {
          "Name": "Repository",
          "Keys": [
              {
                  "ID": "5a46c9aaa82ff150bb7305a2d17d0c521c2d784246807b2dc611f436a69041fd"
              }
          ]
        },
        {
          "Name": "Root",
          "Keys": [
              {
                  "ID": "a2489bcac7a79aa67b19b96c4a3bf0c675ffdf00c6d2fabe1a5df1115e80adce"
              }
          ]
        }
      ]
    }
  ]
  ```

  The `SignedTags` key will list the `SignedTag` name, its `Digest`,
  and the `Signers` responsible for the signature.

  `AdministrativeKeys` will list the `Repository` and `Root` keys.

  If signers are set up for the repository via other `docker trust`
  commands, `docker trust inspect` includes a `Signers` key:

  ```bash
  $ docker trust inspect my-image:purple
  ```

  The output is in JSON format, for example:

  ```json
  [
    {
      "Name": "my-image:purple",
      "SignedTags": [
        {
          "SignedTag": "purple",
          "Digest": "941d3dba358621ce3c41ef67b47cf80f701ff80cdf46b5cc86587eaebfe45557",
          "Signers": [
            "alice",
            "bob",
            "carol"
          ]
        }
      ],
      "Signers": [
        {
          "Name": "alice",
          "Keys": [
              {
                  "ID": "04dd031411ed671ae1e12f47ddc8646d98f135090b01e54c3561e843084484a3"
              },
              {
                  "ID": "6a11e4898a4014d400332ab0e096308c844584ff70943cdd1d6628d577f45fd8"
              }
          ]
        },
        {
          "Name": "bob",
          "Keys": [
              {
                  "ID": "433e245c656ae9733cdcc504bfa560f90950104442c4528c9616daa45824ccba"
              }
          ]
        },
        {
          "Name": "carol",
          "Keys": [
              {
                  "ID": "d32fa8b5ca08273a2880f455fcb318da3dc80aeae1a30610815140deef8f30d9"
              },
              {
                  "ID": "9a8bbec6ba2af88a5fad6047d428d17e6d05dbdd03d15b4fc8a9a0e8049cd606"
              }
          ]
        }
      ],
      "AdministrativeKeys": [
        {
          "Name": "Repository",
          "Keys": [
              {
                  "ID": "27df2c8187e7543345c2e0bf3a1262e0bc63a72754e9a7395eac3f747ec23a44"
              }
          ]
        },
        {
          "Name": "Root",
          "Keys": [
              {
                  "ID": "40b66ccc8b176be8c7d365a17f3e046d1c3494e053dd57cfeacfe2e19c4f8e8f"
              }
          ]
        }
      ]
    }
  ]
  ```

  If the image tag is unsigned or unavailable, `docker trust inspect` does not
  display any signed tags.

  ```bash
  $ docker trust inspect unsigned-img

  No signatures or cannot access unsigned-img
  ```

  However, if other tags are signed in the same image repository,
  `docker trust inspect` reports relevant key information:

  ```bash
  $ docker trust inspect alpine:unsigned
  ```

  The output is in JSON format, for example:

  ```json
  [
    {
      "Name": "alpine:unsigned",
      "Signers": [],
      "AdministrativeKeys": [
        {
          "Name": "Repository",
          "Keys": [
            {
              "ID": "5a46c9aaa82ff150bb7305a2d17d0c521c2d784246807b2dc611f436a69041fd"
            }
          ]
        },
        {
          "Name": "Root",
          "Keys": [
            {
              "ID": "a2489bcac7a79aa67b19b96c4a3bf0c675ffdf00c6d2fabe1a5df1115e80adce"
            }
          ]
        }
      ]
    }
  ]
  ```

  ### Get details about signatures for all image tags in a repository

  If no tag is specified, `docker trust inspect` will report details for all
  signed tags in the repository:

  ```bash
  $ docker trust inspect alpine
  ```

  The output is in JSON format, for example:

  ```json
  [
    {
      "Name": "alpine",
      "SignedTags": [
        {
          "SignedTag": "3.5",
          "Digest": "b007a354427e1880de9cdba533e8e57382b7f2853a68a478a17d447b302c219c",
          "Signers": [
            "Repo Admin"
          ]
        },
        {
          "SignedTag": "3.6",
          "Digest": "d6bfc3baf615dc9618209a8d607ba2a8103d9c8a405b3bd8741d88b4bef36478",
          "Signers": [
            "Repo Admin"
          ]
        },
        {
          "SignedTag": "edge",
          "Digest": "23e7d843e63a3eee29b6b8cfcd10e23dd1ef28f47251a985606a31040bf8e096",
          "Signers": [
            "Repo Admin"
          ]
        },
        {
          "SignedTag": "latest",
          "Digest": "d6bfc3baf615dc9618209a8d607ba2a8103d9c8a405b3bd8741d88b4bef36478",
          "Signers": [
            "Repo Admin"
          ]
        }
      ],
      "Signers": [],
      "AdministrativeKeys": [
        {
          "Name": "Repository",
          "Keys": [
            {
              "ID": "5a46c9aaa82ff150bb7305a2d17d0c521c2d784246807b2dc611f436a69041fd"
            }
          ]
        },
        {
          "Name": "Root",
          "Keys": [
            {
              "ID": "a2489bcac7a79aa67b19b96c4a3bf0c675ffdf00c6d2fabe1a5df1115e80adce"
            }
          ]
        }
      ]
    }
  ]
  ```


  ### Get details about signatures for multiple images

  `docker trust inspect` can take multiple repositories and images as arguments,
  and reports the results in an ordered list:

  ```bash
  $ docker trust inspect alpine notary
  ```

  The output is in JSON format, for example:

  ```json
  [
    {
      "Name": "alpine",
      "SignedTags": [
        {
          "SignedTag": "3.5",
          "Digest": "b007a354427e1880de9cdba533e8e57382b7f2853a68a478a17d447b302c219c",
          "Signers": [
            "Repo Admin"
          ]
        },
        {
          "SignedTag": "3.6",
          "Digest": "d6bfc3baf615dc9618209a8d607ba2a8103d9c8a405b3bd8741d88b4bef36478",
          "Signers": [
            "Repo Admin"
          ]
        },
        {
          "SignedTag": "edge",
          "Digest": "23e7d843e63a3eee29b6b8cfcd10e23dd1ef28f47251a985606a31040bf8e096",
          "Signers": [
            "Repo Admin"
          ]
        },
        {
          "SignedTag": "integ-test-base",
          "Digest": "3952dc48dcc4136ccdde37fbef7e250346538a55a0366e3fccc683336377e372",
          "Signers": [
            "Repo Admin"
          ]
        },
        {
          "SignedTag": "latest",
          "Digest": "d6bfc3baf615dc9618209a8d607ba2a8103d9c8a405b3bd8741d88b4bef36478",
          "Signers": [
            "Repo Admin"
          ]
        }
      ],
      "Signers": [],
      "AdministrativeKeys": [
        {
          "Name": "Repository",
          "Keys": [
            {
              "ID": "5a46c9aaa82ff150bb7305a2d17d0c521c2d784246807b2dc611f436a69041fd"
            }
          ]
        },
        {
          "Name": "Root",
          "Keys": [
            {
              "ID": "a2489bcac7a79aa67b19b96c4a3bf0c675ffdf00c6d2fabe1a5df1115e80adce"
            }
          ]
        }
      ]
    },
    {
      "Name": "notary",
      "SignedTags": [
        {
          "SignedTag": "server",
          "Digest": "71f64ab718a3331dee103bc5afc6bc492914738ce37c2d2f127a8133714ecf5c",
          "Signers": [
            "Repo Admin"
          ]
        },
        {
          "SignedTag": "signer",
          "Digest": "a6122d79b1e74f70b5dd933b18a6d1f99329a4728011079f06b245205f158fe8",
          "Signers": [
            "Repo Admin"
          ]
        }
      ],
      "Signers": [],
      "AdministrativeKeys": [
        {
          "Name": "Root",
          "Keys": [
            {
              "ID": "8cdcdef5bd039f4ab5a029126951b5985eebf57cabdcdc4d21f5b3be8bb4ce92"
            }
          ]
        },
        {
          "Name": "Repository",
          "Keys": [
            {
              "ID": "85bfd031017722f950d480a721f845a2944db26a3dc084040a70f1b0d9bbb3df"
            }
          ]
        }
      ]
    }
  ]
  ```

  ### Formatting

  You can print the inspect output in a human-readable format instead of the default
  JSON output, by using the `--pretty` option:

  ### Get details about signatures for a single image tag

  ```bash
  $ docker trust inspect --pretty alpine:latest

  SIGNED TAG          DIGEST                                                             SIGNERS
  latest              1072e499f3f655a032e88542330cf75b02e7bdf673278f701d7ba61629ee3ebe   (Repo Admin)

  Administrative keys for alpine:latest:
  Repository Key: 5a46c9aaa82ff150bb7305a2d17d0c521c2d784246807b2dc611f436a69041fd
  Root Key:       a2489bcac7a79aa67b19b96c4a3bf0c675ffdf00c6d2fabe1a5df1115e80adce
  ```

  The `SIGNED TAG` is the signed image tag with a unique content-addressable
  `DIGEST`. `SIGNERS` lists all entities who have signed.

  The administrative keys listed specify the root key of trust, as well as
  the administrative repository key. These keys are responsible for modifying
  signers, and rotating keys for the signed repository.

  If signers are set up for the repository via other `docker trust` commands,
  `docker trust inspect --pretty` displays them appropriately as a `SIGNER`
  and specify their `KEYS`:

  ```bash
  $ docker trust inspect --pretty my-image:purple

  SIGNED TAG          DIGEST                                                              SIGNERS
  purple              941d3dba358621ce3c41ef67b47cf80f701ff80cdf46b5cc86587eaebfe45557    alice, bob, carol

  List of signers and their keys:

  SIGNER              KEYS
  alice               47caae5b3e61, a85aab9d20a4
  bob                 034370bcbd77, 82a66673242c
  carol               b6f9f8e1aab0

  Administrative keys for my-image:
  Repository Key: 27df2c8187e7543345c2e0bf3a1262e0bc63a72754e9a7395eac3f747ec23a44
  Root Key:       40b66ccc8b176be8c7d365a17f3e046d1c3494e053dd57cfeacfe2e19c4f8e8f
  ```

  However, if other tags are signed in the same image repository,
  `docker trust inspect` reports relevant key information.

  ```bash
  $ docker trust inspect --pretty alpine:unsigned

  No signatures for alpine:unsigned


  Administrative keys for alpine:unsigned:
  Repository Key: 5a46c9aaa82ff150bb7305a2d17d0c521c2d784246807b2dc611f436a69041fd
  Root Key:       a2489bcac7a79aa67b19b96c4a3bf0c675ffdf00c6d2fabe1a5df1115e80adce
  ```

  ### Get details about signatures for all image tags in a repository

  ```bash
  $ docker trust inspect --pretty alpine

  SIGNED TAG          DIGEST                                                             SIGNERS
  2.6                 9ace551613070689a12857d62c30ef0daa9a376107ec0fff0e34786cedb3399b   (Repo Admin)
  2.7                 9f08005dff552038f0ad2f46b8e65ff3d25641747d3912e3ea8da6785046561a   (Repo Admin)
  3.1                 d9477888b78e8c6392e0be8b2e73f8c67e2894ff9d4b8e467d1488fcceec21c8   (Repo Admin)
  3.2                 19826d59171c2eb7e90ce52bfd822993bef6a6fe3ae6bb4a49f8c1d0a01e99c7   (Repo Admin)
  3.3                 8fd4b76819e1e5baac82bd0a3d03abfe3906e034cc5ee32100d12aaaf3956dc7   (Repo Admin)
  3.4                 833ad81ace8277324f3ca8c91c02bdcf1d13988d8ecf8a3f97ecdd69d0390ce9   (Repo Admin)
  3.5                 af2a5bd2f8de8fc1ecabf1c76611cdc6a5f1ada1a2bdd7d3816e121b70300308   (Repo Admin)
  3.6                 1072e499f3f655a032e88542330cf75b02e7bdf673278f701d7ba61629ee3ebe   (Repo Admin)
  edge                79d50d15bd7ea48ea00cf3dd343b0e740c1afaa8e899bee475236ef338e1b53b   (Repo Admin)
  latest              1072e499f3f655a032e88542330cf75b02e7bdf673278f701d7ba61629ee3ebe   (Repo Admin)

  Administrative keys for alpine:
  Repository Key: 5a46c9aaa82ff150bb7305a2d17d0c521c2d784246807b2dc611f436a69041fd
  Root Key:       a2489bcac7a79aa67b19b96c4a3bf0c675ffdf00c6d2fabe1a5df1115e80adce
  ```

  Here's an example with signers that are set up by `docker trust` commands:

  ```bash
  $ docker trust inspect --pretty my-image

  SIGNED TAG          DIGEST                                                              SIGNERS
  red                 852cc04935f930a857b630edc4ed6131e91b22073bcc216698842e44f64d2943    alice
  blue                f1c38dbaeeb473c36716f6494d803fbfbe9d8a76916f7c0093f227821e378197    alice, bob
  green               cae8fedc840f90c8057e1c24637d11865743ab1e61a972c1c9da06ec2de9a139    alice, bob
  yellow              9cc65fc3126790e683d1b92f307a71f48f75fa7dd47a7b03145a123eaf0b45ba    carol
  purple              941d3dba358621ce3c41ef67b47cf80f701ff80cdf46b5cc86587eaebfe45557    alice, bob, carol
  orange              d6c271baa6d271bcc24ef1cbd65abf39123c17d2e83455bdab545a1a9093fc1c    alice

  List of signers and their keys for my-image:

  SIGNER              KEYS
  alice               47caae5b3e61, a85aab9d20a4
  bob                 034370bcbd77, 82a66673242c
  carol               b6f9f8e1aab0

  Administrative keys for my-image:
  Repository Key: 27df2c8187e7543345c2e0bf3a1262e0bc63a72754e9a7395eac3f747ec23a44
  Root Key:       40b66ccc8b176be8c7d365a17f3e046d1c3494e053dd57cfeacfe2e19c4f8e8f
  ```
deprecated: false
experimental: false
experimentalcli: false
kubernetes: false
swarm: false

