skopeo login --username <username> <registry>
skopeo inspect docker://myregistry/myimage:tag
skopeo list-tags docker://myregistry/myimage
skopeo copy docker://<repo1/image1> docker://<repo2/image2>
skopeo copy docker://<repo/image:tag> dir:<path>
skopeo delete <image>
Note: tagging is done using copy