package container import ( "context" "github.com/docker/cli/cli" "github.com/docker/cli/cli/command" "github.com/docker/cli/cli/command/completion" "github.com/docker/cli/cli/command/formatter" "github.com/pkg/errors" "github.com/spf13/cobra" ) type diffOptions struct { container string } // NewDiffCommand creates a new cobra.Command for `docker diff` func NewDiffCommand(dockerCli command.Cli) *cobra.Command { var opts diffOptions return &cobra.Command{ Use: "diff CONTAINER", Short: "Inspect changes to files or directories on a container's filesystem", Args: cli.ExactArgs(1), RunE: func(cmd *cobra.Command, args []string) error { opts.container = args[0] return runDiff(cmd.Context(), dockerCli, &opts) }, Annotations: map[string]string{ "aliases": "docker container diff, docker diff", }, ValidArgsFunction: completion.ContainerNames(dockerCli, false), } } func runDiff(ctx context.Context, dockerCli command.Cli, opts *diffOptions) error { if opts.container == "" { return errors.New("Container name cannot be empty") } changes, err := dockerCli.Client().ContainerDiff(ctx, opts.container) if err != nil { return err } diffCtx := formatter.Context{ Output: dockerCli.Out(), Format: NewDiffFormat("{{.Type}} {{.Path}}"), } return DiffFormatWrite(diffCtx, changes) }