docker/tarfile/dest.go
func (d *Destination) AddRepoTags(tags []reference.NamedTagged) {
	d.repoTags = append(d.repoTags, tags...)
}
func (d *Destination) AddRepoTags(tags []reference.NamedTagged) {
	d.repoTags = append(d.repoTags, tags...)
}
// AddRepoTags adds the specified tags to the destination's repoTags.