update-s6-overlay.yml

name: Update S6 Overlay
on:
  push:
    branches: main
    paths: .github/workflows/update-s6-overlay.yml
  schedule:
    - cron: '0 15 * * *'
  workflow_dispatch:
permissions:
  contents: read
concurrency: update-s6-overlay
jobs:
  update-s6-overlay:
    name: Update S6 Overlay
    runs-on: ubuntu-latest
    timeout-minutes: 5
    env:
      REGEX: ^(ARG S6_OVERLAY_VERSION=)[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+(\-[0-9])?$
    steps:
      - name: Checkout
        uses: actions/checkout@v3.0.2
      - name: Determine info
        shell: bash
        id: info
        run: |
          OLD_VERSION=$(
            grep -oEi "$REGEX" Dockerfile |
            grep -oEi '[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+(\-[0-9])?$'
          )
          API=https://api.github.com/repos/just-containers/s6-overlay/releases
          RELEASES=https://github.com/just-containers/s6-overlay/releases  
          NEW_VERSION=$(curl -sSf "$API/latest" | jq -r .tag_name)
          NEW_VERSION=${NEW_VERSION#'v'}
          BUMP='Bump s6 overlay from'
          UPDATE_TITLE="$BUMP $OLD_VERSION to $NEW_VERSION"
          UPDATE_BODY="$BUMP"
          UPDATE_BODY="$UPDATE_BODY [$OLD_VERSION]($RELEASES/v$OLD_VERSION)"
          UPDATE_BODY="$UPDATE_BODY to [$NEW_VERSION]($RELEASES/v$NEW_VERSION)."
          echo "::set-output name=version::$NEW_VERSION"
          echo "::set-output name=update-title::$UPDATE_TITLE"
          echo "::set-output name=update-body:: $UPDATE_BODY"
      - name: Update Dockerfile
        run: sed -i -E "s/$REGEX/\1$VERSION\2/" Dockerfile
        env:
          VERSION: ${{steps.info.outputs.version}}
      - name: Handle changes
        uses: peter-evans/create-pull-request@v4.1.1
        id: changes
        with:
          token: ${{secrets.AUTOMATION_TOKEN}}
          commit-message: ${{steps.info.outputs.update-title}}
          committer: ${{env.GIT_USER}}
          add-paths: Dockerfile
          author: ${{env.GIT_USER}}
          branch: auto/update-s6-overlay
          delete-branch: true
          title: ${{steps.info.outputs.update-title}}
          body: ${{steps.info.outputs.update-body}}
          labels: auto,dependencies
        env:
          GIT_USER: ${{secrets.AUTOMATION_USER}} <${{secrets.AUTOMATION_EMAIL}}>
      - name: Enable auto-merge
        if: steps.changes.outputs.pull-request-operation == 'created'
        run: gh pr merge --auto --squash "$PULL_REQUEST_URL"
        env:
          PULL_REQUEST_URL: ${{steps.changes.outputs.pull-request-url}}
          GITHUB_TOKEN: ${{secrets.AUTOMATION_TOKEN}}