monthly_build_check_dockers.yml

name: Monthly Docker Build Validation

on:
  schedule:
    - cron: '57 0 1 * *'
  workflow_dispatch:

jobs:
  get-dockerfiles:
    name: Get Changed Dockerfiles Matrix
    runs-on: ubuntu-22.04
    outputs:
      matrix: ${{ steps.set-matrix.outputs.matrix }}
    steps:
      - id: checkout
        uses: actions/checkout@v3
        name: Checkout Repo
        with:
          fetch-depth: 0
      - id: set-matrix
        name: Changed Dockerfiles String to Matrix
        run: |
          MATRIX=$(find * -name Dockerfile | xargs -I{} dirname {} | jq -Rrs 'split("\n") | map(select(. != "")) | map(rtrimstr("/Dockerfile")) | map({"path": ., "image": (. | split("/")[0] | ascii_downcase), "tag": (. | split("/")[1] // "latest")}) | @json')
          echo "matrix=$MATRIX" >> $GITHUB_OUTPUT
  build-dockerfiles:
    name: Build ${{ matrix.path }}
    needs: get-dockerfiles
    runs-on: ubuntu-22.04
    strategy:
      fail-fast: false
      matrix:
        include: ${{ fromJSON(needs.get-dockerfiles.outputs.matrix) }}
    steps:
      - id: docker-buildx-setup
        name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2
      - id: test-build
        name: Test Build Dockerfile
        uses: docker/build-push-action@v4
        with:
          context: "{{defaultContext}}:${{ matrix.path }}"