Add ability to create and push a standalone tagged image manifest containing artifact(s)

[ipanova]

Feature request description

With current podman version (5.1.2) it is possible to only add artifact to an image index. It is not possible to create and push a standalone image manifest what would contain artifact(s)

Suggest potential solution

Add podman command that will enable create and push of a standalone tagged image manifest what would contain artifact(s)

Have you considered any alternatives?

~~Use podman manifest add --artifact that would add image manifest with artifact to the index. Push that index. Inspect the index post-push operation, find child manifest containing artifact, pull it, tag it, re-push it.~~ There are no alternatives with podman, since it is not possible to podman pull manifest with artifacts.

However it is achievable with skopeo skopeo copy docker://$foo@$digest docker://$foo:$tag

Additional context

Add any other context or screenshots about the feature request here.

[github-actions[bot]]

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[baude]

please look at the podman artifact commands and familiarize with what is offered on the main branch of podman (some of it is in 5.4 too). I think we have accomplished what you want but if not, please open a new issue on those verbs and perhaps I can address the problem there.