Add support for publishing to GitHub Container Registry

[Nutomic]

Continued from #5979 by @seang96

[dessalines]

Related to that error:

ERROR: failed to build: invalid tag "********/lemmy\nghcr.io/lemmynet/lemmy:1.0.0-alpha.8": invalid reference format

docker/setup-buildx-action#291

So I'm guessing ghcr doesn't like dots in tag names?

[Nutomic]

I fixed that one already. Now theres another error: failed to build: tag is needed when pushing to registry. But the tag param is unchanged from before...

[dessalines]

The only things I could find were posts related to github actions. Maybe there's just a network blip with github not reading the tags fast enough?

[dessalines]

I don't see anything else related to tag besides one setting in the buildx plugin... so not sure what else to do there.

[Nutomic]

Same error after restart

Edit: Here are the docs btw: https://codeberg.org/woodpecker-plugins/docker-buildx/src/branch/main/docs.md#multi-registry-push-example

[seang96]

https://codeberg.org/woodpecker-plugins/docker-buildx/issues/156 mentions tagging issue might be related to newlines not generating properly?

[dessalines]

try using tag: dev or tags: dev and see if that works. If so then it might be an issue with the injected tag var.

[Nutomic]

https://codeberg.org/woodpecker-plugins/docker-buildx/issues/156 mentions tagging issue might be related to newlines not generating properly?

This is about tags_file which we dont use.

try using tag: dev or tags: dev and see if that works. If so then it might be an issue with the injected tag var.

Tried it and same error.

Edit: set auto_tag: true now and still fails.

[seang96]

Maybe setting Daemon.Debug will provide some insights?

Edit: Found setting in the plugin here https://codeberg.org/woodpecker-plugins/docker-buildx/src/commit/b77706d30da9f5c88ce7e2f3a03e4ef819902d1f/plugin/plugin.go#L17

[Nutomic]

Added debug but it doesnt show any extra info.

[seang96]

I been looking at this again today since dockers registry hates renovate.

While tag is documented I don't see anywhere in the plugins code that would load it in unless if its from another library... I also didn't find many other git repos that used "tag" setting, especially with multi repo.

Could you try something like

tags:
   - ${CI_COMMIT_TAG}

And see how that'd go?

[Nutomic]

The tag is already being set in line 244. It seems like this is a bug with the CI plugin, opened an issue there: https://codeberg.org/woodpecker-plugins/docker-buildx/issues/310