Charmcraft 3 should still accept image digests for upload-resource

[lengau]

Bug Description

Charmcraft 3 doesn't accept digests, just image IDs, when uploading a resource.

Solution: Reimplement this method on the ImageService. It can use Docker's images.list() method and find the digest under image.attrs["RepoDigests"]. Note that these digests are in <name>@<hash-algo>:<hash> form, so you'll need to check if it matches a regex something like ".+@([a-z0-9]+:)?{digest}" (so it works with just the hash or algo:hash).

To Reproduce

See: https://discourse.charmhub.io/t/publish-your-charm-on-charmhub/12281/6?u=lengau

Environment

n/a

charmcraft.yaml

n/a

Relevant log output

$ charmcraft upload-resource loki-worker-k8s loki-image --image=sha256:583ddc10f52bb4fe4806baa05ecbaa2a3246238f1423bd2a6c35b02fd87b446c
Unknown OCI image reference.                                                                                                                 
Recommended resolution: Pass a valid container transport string.                                                                             
Full execution log: '/home/jose/.local/state/charmcraft/log/charmcraft-20240801-171905.784405.log'

[syncronize-issues-to-jira]

Thank you for reporting us your feedback!

The internal ticket has been created: https://warthogs.atlassian.net/browse/CRAFT-3564.

This message was autogenerated