package main import ( "fmt" "io" "os" "strings" "github.com/pkg/errors" "github.com/projectatomic/buildah" "github.com/projectatomic/libpod/cmd/podman/libpodruntime" "github.com/projectatomic/libpod/libpod" "github.com/projectatomic/libpod/libpod/image" "github.com/projectatomic/libpod/pkg/util" "github.com/urfave/cli" ) var ( commitFlags = []cli.Flag{ cli.StringSliceFlag{ Name: "change, c", Usage: "Apply the following possible instructions to the created image (default []): CMD | ENTRYPOINT | ENV | EXPOSE | LABEL | STOPSIGNAL | USER | VOLUME | WORKDIR", }, cli.StringFlag{ Name: "format, f", Usage: "`format` of the image manifest and metadata", Value: "oci", }, cli.StringFlag{ Name: "message, m", Usage: "Set commit message for imported image", }, cli.StringFlag{ Name: "author, a", Usage: "Set the author for the image comitted", }, cli.BoolTFlag{ Name: "pause, p", Usage: "Pause container during commit", }, cli.BoolFlag{ Name: "quiet, q", Usage: "Suppress output", }, } commitDescription = `Create an image from a container's changes. Optionally tag the image created, set the author with the --author flag, set the commit message with the --message flag, and make changes to the instructions with the --change flag.` commitCommand = cli.Command{ Name: "commit", Usage: "Create new image based on the changed container", Description: commitDescription, Flags: commitFlags, Action: commitCmd, ArgsUsage: "CONTAINER [REPOSITORY[:TAG]]", } ) func commitCmd(c *cli.Context) error { if err := validateFlags(c, commitFlags); err != nil { return err } runtime, err := libpodruntime.GetRuntime(c) if err != nil { return errors.Wrapf(err, "could not get runtime") } defer runtime.Shutdown(false) var ( writer io.Writer mimeType string ) args := c.Args() if len(args) != 2 { return errors.Errorf("you must provide a container name or ID and a target image name") } switch c.String("format") { case "oci": mimeType = buildah.OCIv1ImageManifest if c.IsSet("message") { return errors.Errorf("messages are only compatible with the docker image format (-f docker)") } case "docker": mimeType = buildah.Dockerv2ImageManifest default: return errors.Errorf("unrecognized image format %q", c.String("format")) } container := args[0] reference := args[1] if c.IsSet("change") { for _, change := range c.StringSlice("change") { splitChange := strings.Split(strings.ToUpper(change), "=") if !util.StringInSlice(splitChange[0], []string{"CMD", "ENTRYPOINT", "ENV", "EXPOSE", "LABEL", "STOPSIGNAL", "USER", "VOLUME", "WORKDIR"}) { return errors.Errorf("invalid syntax for --change ", change) } } } if !c.Bool("quiet") { writer = os.Stderr } ctr, err := runtime.LookupContainer(container) if err != nil { return errors.Wrapf(err, "error looking up container %q", container) } sc := image.GetSystemContext(runtime.GetConfig().SignaturePolicyPath, "", false) coptions := buildah.CommitOptions{ SignaturePolicyPath: runtime.GetConfig().SignaturePolicyPath, ReportWriter: writer, SystemContext: sc, PreferredManifestType: mimeType, } options := libpod.ContainerCommitOptions{ CommitOptions: coptions, Pause: c.Bool("pause"), Message: c.String("message"), Changes: c.StringSlice("change"), Author: c.String("author"), } newImage, err := ctr.Commit(getContext(), reference, options) if err != nil { return err } fmt.Println(newImage.ID()) return nil }