## Summary
First Renovate run failed with `reference not found` on `renovatebot/github-action@v40` — act_runner's go-git clone couldn't resolve the major-rolling tag (whether the upstream tag is missing or it's a go-git tag-fetch quirk doesn't really matter — the wrapper action is the wrong layer to fight).
Switch to invoking the official `renovate/renovate:40` Docker image directly. The job container already has the host Docker socket mounted (per `ci-runners.compose.yml`), so the sibling `docker run` works out of the box. Renovate clones the target repo itself via API + token, so no `actions/checkout` or bind-mount is needed.
Net result:
- Decoupled from third-party action-tag resolution.
- Renovate runtime version explicitly pinned (reproducible).
- One fewer indirection to debug.
## Test plan
- [ ] After merge, trigger the workflow manually (Actions → Renovate → Run workflow).
- [ ] Job pulls `renovate/renovate:40` (~1 GB, one-time on this runner host) and runs without "reference not found".
- [ ] Renovate creates the onboarding PR ("Configure Renovate") visible in the repo's PR list, signed by `apf-portal-bot`.
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Co-authored-by: Julien Gautier <julien.gautier@apf.asso.fr>
Reviewed-on: #12
julien
399a14e0f4