build.yml

name: "Builder"

# Controls when the workflow will run
on:
  push:
    branches: ['main']
    tags:
      - 'v*.*.*'
  pull_request:
    branches: ['main']
  schedule:
    - cron: '18 6 */2 * *'
      # Run builds at 06:18 on every 2nd day-of-month.

concurrency:
  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
  cancel-in-progress: true

permissions:
  contents: read

jobs:
  snyk:
    name: "Snyk: scanner"
    runs-on: ubuntu-latest
    permissions:
      contents: read
      security-events: write
    steps:
      - uses: actions/checkout@v4
      - name: Build a Docker image
        run: docker build -t moj/wordpress-base-fpm .

      - name: Run Snyk | Check Docker image for vulnerabilities
        uses: snyk/actions/docker@master
        env:
          SNYK_TOKEN: ${{ secrets.SNYK_TOKEN }}
        with:
          image: moj/wordpress-base-fpm
          args: --file=Dockerfile --severity-threshold=medium

  build:
    if: github.event_name != 'pull_request'
    name: "Build: multi-arch docker"
    needs: snyk
    runs-on: ubuntu-latest
    steps:
      # First, checkout
      - name: Checkout
        uses: actions/checkout@v4

      # QEMU; multi-arch stuff
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

      # get buildx - build multi-arch stuff
      - name: Set up Docker Buildx
        id: buildx
        uses: docker/setup-buildx-action@v3

      # Access Docker Hub
      - name: Login to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      # Gather meta for the builds
      - name: Docker meta
        id: wordpress-base-meta
        uses: docker/metadata-action@v5
        with:
          images: ministryofjustice/wordpress-base-fpm
          tags: |
            type=ref,event=branch
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{major}}
          flavor: |
            latest=true

      # perform the builds
      - name: Build and push
        uses: docker/build-push-action@v5
        with:
          context: .
          platforms: |
            linux/amd64
            linux/arm64/v8
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.wordpress-base-meta.outputs.tags }}
          labels: ${{ steps.wordpress-base-meta.outputs.labels }}