ci(github): use app token for dependabot merges#78
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Pull request overview
This PR updates the Dependabot auto-merge workflow to approve and enable auto-merge using a GitHub App installation token (instead of GITHUB_TOKEN), so downstream workflows can run after Dependabot merges land on main.
Changes:
- Adds a SHA-pinned
actions/create-github-app-tokenstep gated to semver patch/minor updates. - Uses the generated App token as
GH_TOKENforgh pr review --approveandgh pr merge --auto --squash. - Leaves
dependabot/fetch-metadatausing the defaultGITHUB_TOKEN.
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| app-id: ${{ secrets.DEPENDABOT_AUTOMERGE_APP_ID }} | ||
| private-key: ${{ secrets.DEPENDABOT_AUTOMERGE_PRIVATE_KEY }} |
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Because this job is restricted to Dependabot-authored pull_request_target runs, GitHub does not expose configured secrets in this context (GitHub docs). That means semver patch/minor Dependabot PRs will reach actions/create-github-app-token with empty app-id/private-key inputs, so the approval and auto-merge steps never run; use an event/secret setup that is available to Dependabot before switching these steps to the app token.
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| - name: Generate app token | ||
| id: app-token | ||
| if: steps.metadata.outputs.update-type == 'version-update:semver-patch' || steps.metadata.outputs.update-type == 'version-update:semver-minor' | ||
| uses: actions/create-github-app-token@fee1f7d63c2ff003460e3d139729b119787bc349 # v2 |
Summary
Updates the Dependabot auto-merge workflow to use the LayeredCraft GitHub App token for approving and enabling auto-merge. This avoids using
GITHUB_TOKENfor the merge operation so downstream workflows can run after Dependabot auto-merged changes land onmain.Changes
actions/create-github-app-tokenstep for semver patch/minor Dependabot PRs.GH_TOKENforgh pr review --approveandgh pr merge --auto --squash.dependabot/fetch-metadataon the defaultGITHUB_TOKEN.Validation
Notes for Reviewers
Requires the Actions secrets
DEPENDABOT_AUTOMERGE_APP_IDandDEPENDABOT_AUTOMERGE_PRIVATE_KEYto be available to this repository.