attempt abstract interface
attempt abstract interface

Signed-off-by: Antonio Murdaca <f9809039ea4850e75dcb8d80b778844aa463358f@redhat.com>

masters-of-cats/image,mtrmac/skopeo,containers/image,mikebrow/skopeo,projectatomic/skopeo,jwhonce/skopeo,containers/image,projectatomic/skopeo,mtrmac/skopeo,jwhonce/skopeo,mtrmac/skopeo,mikebrow/skopeo