ci: run the PR gate on the self-hosted ARC runners - #7
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Pull request overview
This PR updates the repository’s PR gate workflow to run on the in-cluster self-hosted ARC runner pool (resal-arc) instead of GitHub-hosted ubuntu-latest, adding job timeouts to prevent hung jobs from holding limited ARC capacity.
Changes:
- Switched all jobs in the PR gate workflow from
runs-on: ubuntu-latesttoruns-on: resal-arc. - Added
timeout-minutes: 30to each job to cap runner occupancy.
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Moves this repo's PR gate on
mainonto the in-cluster self-hosted ARC runners (resal-arc).Phase 3 of the runner migration only ever landed on
develop. Onmain, 203 workflow files across47 repos still run on GitHub-hosted
ubuntu-latest. This PR is part of the test/PR-gate half ofthat sweep — the image-build half is being handled separately, because ARC has no buildx and needs
per-repo Dockerfile evidence first.
Scope
Only two things change per job:
runs-on: ubuntu-latest->resal-arc, and an addedtimeout-minutes: 30. Nothing else — no steps, triggers, versions or expressions.Each edit was applied mechanically and then re-parsed, and is refused unless the structural
diff between the old and new YAML contains nothing but those two keys. 37 files were processed and
0 were refused.
timeout-minutesis added deliberately: the ARC pool is finite, and without it a hung job holds arunner for the 6-hour default.
How this is proven
This workflow runs on
pull_request, so the checks on this PR are the flipped workflow executingon ARC. If ARC cannot run this repo's gate, this PR goes red and simply should not be merged —
the change cannot reach
mainunproven.The same flip has been running on
developsince 2026-07-22, and the pilot for this sweep(InventoryMs #702, including a
docker composeunit-test job on the ARC dind sidecar) passed allchecks.
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