func Tag(client *docker.Client, id, repo, tag string) (err error) {
opts := docker.TagImageOptions{
Repo: repo,
Tag: tag,
}
err = client.TagImage(id, opts)
return
}
func tagImage(client *dockerclient.Client, img, tag string) error {
ref, err := reference.Parse(tag)
if err != nil {
return fmt.Errorf("invalid tag %s: %v", tag, err)
}
namedTagged, ok := ref.(reference.NamedTagged)
if !ok {
return fmt.Errorf("expecting named tagged reference: %s", tag)
}
tagOptions := dockerclient.TagImageOptions{
Repo: namedTagged.Name(),
Tag: namedTagged.Tag(),
Force: true,
}
if err := client.TagImage(img, tagOptions); err != nil {
return fmt.Errorf("error tagging image %s as %s: %v", img, tag, err)
}
return nil
}