package daemon import ( "github.com/docker/distribution/reference" "github.com/docker/docker/image" ) // TagImage creates the tag specified by newTag, pointing to the image named // imageName (alternatively, imageName can also be an image ID). func (daemon *Daemon) TagImage(imageName, repository, tag string) error { imageID, err := daemon.GetImageID(imageName) if err != nil { return err } newTag, err := reference.ParseNormalizedNamed(repository) if err != nil { return err } if tag != "" { if newTag, err = reference.WithTag(reference.TrimNamed(newTag), tag); err != nil { return err } } return daemon.TagImageWithReference(imageID, newTag) } // TagImageWithReference adds the given reference to the image ID provided. func (daemon *Daemon) TagImageWithReference(imageID image.ID, newTag reference.Named) error { if err := daemon.referenceStore.AddTag(newTag, imageID.Digest(), true); err != nil { return err } daemon.LogImageEvent(imageID.String(), reference.FamiliarString(newTag), "tag") return nil }