github-actions-runner-detect-release.yaml

name: Get latest release for github actions runner and update if required
on:
  schedule:
    - cron:  '0 * * * *'
jobs:
  update-version:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - name: Fetch release version
        id: getrelease
        run: |
          echo ::set-output name=release_tag::$(curl -sL https://api.github.com/repos/actions/runner/releases/latest | jq  '.tag_name' | sed 's/"//g' | sed 's/^v//')
      - name: Read internal update version
        id: getversion
        run: echo "::set-output name=version::$(grep 'ARG RUNNER_VERSION' github-actions-runner/Dockerfile | awk -F'=' '{print $2}')"
      - name: Update runner in container
        if: steps.getrelease.outputs.release_tag != steps.getversion.outputs.version && steps.getrelease.outputs.release_tag != 'null'
        env:
          RELEASE_NO: ${{ steps.getrelease.outputs.release_tag }}
          CURRENT_VERSION: ${{ steps.getversion.outputs.version }}
        run: |
          sed -i "s/ARG RUNNER_VERSION=$CURRENT_VERSION/ARG RUNNER_VERSION=$RELEASE_NO/" github-actions-runner/Dockerfile  
      - name: Create Pull Request
        id: cpr
        uses: peter-evans/create-pull-request@v3
        with:
          commit-message: Update actions runner to ${{ steps.getrelease.outputs.release_tag }}
          title: Update actions runner to ${{ steps.getrelease.outputs.release_tag }}
          body: |
            Updates [runner][1] to ${{ steps.getrelease.outputs.release_tag }}

            Auto-generated by [create-pull-request][2]

            [1]: https://github.com/actions/runner
            [2]: https://github.com/peter-evans/create-pull-request
          labels: dependencies, automated pr
          branch: actions-runner-updates
          reviewers: pmb59,anilthanki,irisdianauy

      - name: Enable Pull Request Automerge
        if: steps.cpr.outputs.pull-request-operation == 'created'
        uses: peter-evans/enable-pull-request-automerge@v1
        with:
          token: ${{ secrets.PAT }}
          pull-request-number: ${{ steps.cpr.outputs.pull-request-number }}
          merge-method: squash
          
      - name: Auto approve
        if: steps.cpr.outputs.pull-request-operation == 'created'
        uses: juliangruber/approve-pull-request-action@v1
        with:
          github-token: ${{ secrets.PAT }}
          number: ${{ steps.cpr.outputs.pull-request-number }}