Auto Merge Dependabot

Automating with GHA

name: Dependabot auto-merge
on: pull_request

permissions:
  contents: write
  pull-requests: write

jobs:
  dependabot:
    runs-on: ubuntu-latest
    if: github.actor == 'dependabot[bot]'
    steps:
      - name: Dependabot metadata
        id: metadata
        uses: dependabot/fetch-metadata@v2
        with:
          github-token: "${{ secrets.GITHUB_TOKEN }}"
      - name: Enable auto-merge for Dependabot PRs
        run: gh pr merge --auto --merge "$PR_URL"
        env:
          PR_URL: ${{github.event.pull_request.html_url}}
          GH_TOKEN: ${{secrets.GITHUB_TOKEN}}

Automate only specific patches based on semver

  # This should depend on the backend and frontend builds, then if it is a PR submitted by Dependabot that is a patch it will merge the PR
  close_pr:
    if: github.event_name == 'pull_request' && github.actor == 'dependabot[bot]'
    runs-on: ubuntu-latest
    needs:
      - backend-build
      - frontend-build
    permissions:
      contents: write
      pull-requests: write
    steps:
      - name: Dependabot metadata
        id: dependabot-metadata
        uses: dependabot/fetch-metadata@v2
        with:
          github-token: "${{ secrets.GITHUB_TOKEN }}"
      - name: Merge PR
        if: steps.dependabot-metadata.outputs.update-type == 'version-update:semver-patch'
        run: gh pr merge --auto --merge "$PR_URL"
        env:
          PR_URL: ${{github.event.pull_request.html_url}}
          GH_TOKEN: ${{secrets.GITHUB_TOKEN}}

---

Sources:

• https://nicolasiensen.github.io/2022-07-23-automating-dependency-updates-with-dependabot-github-auto-merge-and-github-actions/
• https://docs.github.com/en/code-security/dependabot/working-with-dependabot/automating-dependabot-with-github-actions