Most interactions with podman (and friends) can refer to a container by an identifier like sha256:417a368e464b22dd60e872395529385d04bfa05b0f8200c7673ff9f98cddd7ee:

• that's the default output format when you use podman build --iidfile=
• you can podman run the identifier directly
• you can use FROM sha256:417a368e464b22dd60e872395529385d04bfa05b0f8200c7673ff9f98cddd7ee in a Containerfile
• buildah also accepts this format for commands on its cli

Unfortunately this doesn't work with skopeo's containers-storage: transport: you need to strip the sha256: first. This is also a problem when using containers/containers-image-proxy-rs.

So simple ask: make it possible to do skopeo copy or an OpenImage on the proxy via a name starting with containers-storage:sha256:.