packer-cn/builder/docker/step_run.go

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package docker
import (
"fmt"
"github.com/mitchellh/multistep"
"github.com/mitchellh/packer/packer"
)
type StepRun struct {
containerId string
}
func (s *StepRun) Run(state multistep.StateBag) multistep.StepAction {
config := state.Get("config").(*Config)
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driver := state.Get("driver").(Driver)
tempDir := state.Get("temp_dir").(string)
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ui := state.Get("ui").(packer.Ui)
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runConfig := ContainerConfig{
Image: config.Image,
RunCommand: config.RunCommand,
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Volumes: map[string]string{
tempDir: "/packer-files",
},
}
ui.Say("Starting docker container...")
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containerId, err := driver.StartContainer(&runConfig)
if err != nil {
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err := fmt.Errorf("Error running container: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
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// Save the container ID
s.containerId = containerId
state.Put("container_id", s.containerId)
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ui.Message(fmt.Sprintf("Container ID: %s", s.containerId))
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return multistep.ActionContinue
}
func (s *StepRun) Cleanup(state multistep.StateBag) {
if s.containerId == "" {
return
}
driver := state.Get("driver").(Driver)
ui := state.Get("ui").(packer.Ui)
// Kill the container. We don't handle errors because errors usually
// just mean that the container doesn't exist anymore, which isn't a
// big deal.
ui.Say(fmt.Sprintf("Killing the container: %s", s.containerId))
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driver.StopContainer(s.containerId)
// Reset the container ID so that we're idempotent
s.containerId = ""
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}