Support images with both tag and digest

[akostadinov]

Hello, it seems like podman supports specifying both - tag and digest at the same time. See containers/common#579

So I guess podlet should do too.

[k9withabone]

I'm guessing you are asking about this for a compose file. While Podman does support specifying both a tag and digest, the Compose Specification shows that it must be one or the other, not both.

[akostadinov]

Nobody produces podman composes. You can only find docker composes in the wild. Ignoring this does not help the user.

[k9withabone]

I'm not ignoring this. Did you read my reply? Did you see the link? The Compose Specification is primarily made by Docker for Docker and is what docker compose v2 is based on. If you think it should be changed with regard to specifying an image, you should create an issue there.

[akostadinov]

Ok, I thought it was related to podman. I don't think it has to be changed. Also I don't think it has to not be changed. It's just that I want composes I come across to work with minimal to no interventions 👼

I see that specifying both is accepted by docker though. Whether they intentionally or not write a spec they don't follow is a different topic. Example https://github.com/immich-app/immich/releases/latest/download/docker-compose.yml

I think it makes sense and is straightforward to support. It has usefulness I assume to specify both so that one can figure out what image is being tracked by the compose author.

[k9withabone]

Fair enough. I'll reopen this, but it will probably be a bit until it's resolved as it requires making breaking changes to my compose_spec library and I just released a new major version last week.