package docker import ( "context" "fmt" "io/ioutil" "os" "github.com/hashicorp/packer/helper/multistep" "github.com/hashicorp/packer/packer" ) // StepTempDir creates a temporary directory that we use in order to // share data with the docker container over the communicator. type StepTempDir struct { tempDir string } func (s *StepTempDir) Run(_ context.Context, state multistep.StateBag) multistep.StepAction { ui := state.Get("ui").(packer.Ui) ui.Say("Creating a temporary directory for sharing data...") var err error var tempdir string configTmpDir, err := packer.ConfigTmpDir() if err == nil { tempdir, err = ioutil.TempDir(configTmpDir, "packer-docker") } if err != nil { err := fmt.Errorf("Error making temp dir: %s", err) state.Put("error", err) ui.Error(err.Error()) return multistep.ActionHalt } s.tempDir = tempdir state.Put("temp_dir", s.tempDir) return multistep.ActionContinue } func (s *StepTempDir) Cleanup(state multistep.StateBag) { if s.tempDir != "" { os.RemoveAll(s.tempDir) } }