hsiegeln 724054296e ci(loader): build & push cameleer-runtime-loader image only when its sources change ...

The init-container image referenced by DockerRuntimeOrchestrator
(`gitea.siegeln.net/cameleer/cameleer-runtime-loader:latest`) had no CI
producer; it had to be built and pushed by hand. Replicates the
cameleer-saas pattern (single docker job with multiple buildx push
steps), but gates the loader build on a path-diff so unrelated commits
don't rebuild and re-tag a sidecar that didn't change.

- build job: fetch-depth=0 + Detect runtime-loader changes step that
  diffs `${{ github.event.before }}..${{ github.sha }}` for paths under
  cameleer-runtime-loader/. Falls back to `changed=true` when no prior
  commit is reachable (first push to a branch).
- docker job: new `Build and push runtime-loader` step gated on
  `needs.build.outputs.loader_changed == 'true'`. Tags with sha and
  latest/branch-<slug>, --provenance=false for Gitea, no buildcache
  (image is alpine + script).
- Cleanup loops in docker and cleanup-branch jobs include the new
  package.
- Rules and loader README updated.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

2026-04-27 23:13:25 +02:00

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