package image import ( "context" "io" "os" "github.com/docker/cli/cli" "github.com/docker/cli/cli/command" dockeropts "github.com/docker/cli/opts" "github.com/docker/docker/api/types" "github.com/docker/docker/pkg/jsonmessage" "github.com/docker/docker/pkg/urlutil" "github.com/spf13/cobra" ) type importOptions struct { source string reference string changes dockeropts.ListOpts message string } // NewImportCommand creates a new `docker import` command func NewImportCommand(dockerCli command.Cli) *cobra.Command { var options importOptions cmd := &cobra.Command{ Use: "import [OPTIONS] file|URL|- [REPOSITORY[:TAG]]", Short: "Import the contents from a tarball to create a filesystem image", Args: cli.RequiresMinArgs(1), RunE: func(cmd *cobra.Command, args []string) error { options.source = args[0] if len(args) > 1 { options.reference = args[1] } return runImport(dockerCli, options) }, } flags := cmd.Flags() options.changes = dockeropts.NewListOpts(nil) flags.VarP(&options.changes, "change", "c", "Apply Dockerfile instruction to the created image") flags.StringVarP(&options.message, "message", "m", "", "Set commit message for imported image") return cmd } func runImport(dockerCli command.Cli, options importOptions) error { var ( in io.Reader srcName = options.source ) if options.source == "-" { in = dockerCli.In() } else if !urlutil.IsURL(options.source) { srcName = "-" file, err := os.Open(options.source) if err != nil { return err } defer file.Close() in = file } source := types.ImageImportSource{ Source: in, SourceName: srcName, } importOptions := types.ImageImportOptions{ Message: options.message, Changes: options.changes.GetAll(), } clnt := dockerCli.Client() responseBody, err := clnt.ImageImport(context.Background(), source, options.reference, importOptions) if err != nil { return err } defer responseBody.Close() return jsonmessage.DisplayJSONMessagesToStream(responseBody, dockerCli.Out(), nil) }