update-s6-overlay.yml

name: Update S6 Overlay
on:
  schedule:
    - cron: '0 15 * * 1-5'
  workflow_dispatch:
permissions:
  contents: read
concurrency: update-s6-overlay
jobs:
  update-s6-overlay:
    name: Update S6 Overlay
    runs-on: ${{vars.RUNS_ON}}
    timeout-minutes: 5
    strategy:
      matrix:
        branch:
          - main
          - release/jammy
          - release/focal
    steps:
      - name: Checkout
        uses: actions/checkout@v4.2.2
        with:
          ref: ${{matrix.branch}}
      - name: Generate app token
        id: app-token
        uses: actions/create-github-app-token@v1.11.5
        with:
          app-id: ${{secrets.GH_APP_ID}}
          private-key: ${{secrets.GH_APP_PRIVATE_KEY}}
      - name: Determine info
        shell: bash
        id: info
        run: |
          REGEX="^(ARG S6_OVERLAY_VERSION=)([0-9]+\.){3}[0-9]+(\-[0-9]+)?$"
          OLD_VERSION=$(
            grep -oEi "$REGEX" Dockerfile |
            grep -oEi '([0-9]+\.){3}[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'}
          UPDATE_TITLE="Bump s6 overlay from $OLD_VERSION to $NEW_VERSION"
          UPDATE_BODY="Bump s6 overlay from"
          UPDATE_BODY="$UPDATE_BODY [$OLD_VERSION]($RELEASES/v$OLD_VERSION)"
          UPDATE_BODY="$UPDATE_BODY to [$NEW_VERSION]($RELEASES/v$NEW_VERSION)."
          USER_NAME="$GH_APP_SLUG[bot]"
          USER_ID=$(gh api "/users/$USER_NAME" --jq .id)
          USER_EMAIL="$USER_ID+$USER_NAME@users.noreply.github.com"
          echo "replace-regex=$REGEX" >> $GITHUB_OUTPUT
          echo "s6-overlay-version=$NEW_VERSION" >> $GITHUB_OUTPUT
          echo "update-title=$UPDATE_TITLE" >> $GITHUB_OUTPUT
          echo "update-body=$UPDATE_BODY" >> $GITHUB_OUTPUT
          echo "commit-author=$USER_NAME <$USER_EMAIL>" >> $GITHUB_OUTPUT
        env:
          GH_APP_SLUG: ${{steps.app-token.outputs.app-slug}}
          GH_TOKEN: ${{steps.app-token.outputs.token}}
      - name: Update Dockerfile
        run: sed -i -E "s/$REPLACE_REGEX/\1$S6_OVERLAY_VERSION/" Dockerfile
        env:
          S6_OVERLAY_VERSION: ${{steps.info.outputs.s6-overlay-version}}
          REPLACE_REGEX: ${{steps.info.outputs.replace-regex}}
      - name: Handle changes
        uses: peter-evans/create-pull-request@v7.0.6
        id: changes
        with:
          token: ${{steps.app-token.outputs.token}}
          commit-message: ${{steps.info.outputs.update-title}}
          author: ${{steps.info.outputs.commit-author}}
          committer: ${{steps.info.outputs.commit-author}}
          add-paths: Dockerfile
          base: ${{matrix.branch}}
          branch: auto/${{matrix.branch}}/update-s6-overlay
          delete-branch: true
          title: ${{steps.info.outputs.update-title}}
          body: ${{steps.info.outputs.update-body}}
          labels: |
            dependencies
            auto
      - name: Enable auto-merge
        if: steps.changes.outputs.pull-request-operation == 'created'
        run: gh pr merge --auto --squash "$PULL_REQUEST_URL"
        env:
          PULL_REQUEST_URL: ${{steps.changes.outputs.pull-request-url}}
          GITHUB_TOKEN: ${{steps.app-token.outputs.token}}