bf8fef9190
The Gitea instance's act_runner is the CI that actually executes here; GitHub Actions on the mirror isn't confirmed to run at all (and a push-mirror lacking the "workflow" PAT scope can silently drop .github/workflows changes anyway). Add a GHCR login/push to the existing .gitea/workflows/docker-publish.yml job instead, so one build produces tags on both the Gitea registry and ghcr.io. Drop the now-redundant .github/workflows/docker-publish.yml. Requires a new repo secret GHCR_TOKEN: a GitHub PAT with write:packages scope (separate from REGISTRY_TOKEN, which is scoped to the Gitea registry).