73 lines
1.7 KiB
Go
73 lines
1.7 KiB
Go
package docker
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import (
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"bytes"
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"fmt"
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"github.com/mitchellh/multistep"
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"github.com/mitchellh/packer/packer"
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"log"
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"os/exec"
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"strings"
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)
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type StepRun struct {
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containerId string
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}
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func (s *StepRun) Run(state multistep.StateBag) multistep.StepAction {
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config := state.Get("config").(*Config)
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tempDir := state.Get("temp_dir").(string)
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ui := state.Get("ui").(packer.Ui)
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ui.Say("Starting docker container with /bin/bash")
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// Args that we're going to pass to Docker
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args := []string{
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"run",
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"-d", "-i", "-t",
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"-v", fmt.Sprintf("%s:/packer-files", tempDir),
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config.Image,
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"/bin/bash",
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}
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// Start the container
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var stdout, stderr bytes.Buffer
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cmd := exec.Command("docker", args...)
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cmd.Stdout = &stdout
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cmd.Stderr = &stderr
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log.Printf("Starting container with args: %v", args)
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if err := cmd.Start(); err != nil {
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err := fmt.Errorf("Error running container: %s", err)
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state.Put("error", err)
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ui.Error(err.Error())
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return multistep.ActionHalt
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}
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if err := cmd.Wait(); err != nil {
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err := fmt.Errorf("Error running container: %s\nStderr: %s",
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err, stderr.String())
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state.Put("error", err)
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ui.Error(err.Error())
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return multistep.ActionHalt
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}
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// Capture the container ID, which is alone on stdout
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s.containerId = strings.TrimSpace(stdout.String())
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ui.Message(fmt.Sprintf("Container ID: %s", s.containerId))
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state.Put("container_id", s.containerId)
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return multistep.ActionContinue
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}
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func (s *StepRun) Cleanup(state multistep.StateBag) {
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if s.containerId == "" {
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return
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}
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// Kill the container. We don't handle errors because errors usually
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// just mean that the container doesn't exist anymore, which isn't a
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// big deal.
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exec.Command("docker", "kill", s.containerId).Run()
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}
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