deploy.yml

---
name: Deploy

on:
  workflow_dispatch:
  push:
    branches:
      - main
    # Don't trigger if it's just a documentation update
    paths-ignore:
      - '**.md'
      - '**.MD'
      - '**.yml'
      - 'LICENSE'
      - '.gitattributes'
      - '.gitignore'
      - '.dockerignore'

# Set workflow-wide environment variables
env:
  GHCR_IMAGE: ${{ github.repository }}
  GHCR_REGISTRY: ghcr.io

jobs:

  deploy_ghcr_multiarch:
    name: Deploy ghcr.io (Multi-Arch)
    runs-on: ubuntu-latest
    strategy:
      matrix:
        image:
          - pw_discord_bot
          - pw_atc_api
          - pw_ingest
          - pw_router
          - pw_ws_broker

    steps:

      # Check out our code
      - name: Checkout
        uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - name: Get short commit hash
        id: vars
        shell: bash
        run: |
          echo "sha_short=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT

      # Generate version
      - name: Determine semantic-gitcommit version
        uses: paulhatch/semantic-version@v5.0.0-alpha2
        id: semantic-gitcommit
        with:
          # The prefix to use to identify tags
          tag_prefix: "v"
          # A string which, if present in a git commit, indicates that a change represents a
          # major (breaking) change, supports regular expressions wrapped with '/'
          major_pattern: "(MAJOR)"
          # Same as above except indicating a minor change, supports regular expressions wrapped with '/'
          minor_pattern: "(MINOR)"
          # A string to determine the format of the version output
          version_format: "${major}.${minor}.${patch}.${increment}-${{ steps.vars.outputs.sha_short }}"
          # If this is set to true, *every* commit will be treated as a new version.
          bump_each_commit: false
          # If true, the body of commits will also be searched for major/minor patterns to determine the version type.
          search_commit_body: false

      # Log into ghcr (so we can push images)
      - name: Login to ghcr.io
        uses: docker/login-action@v1
        with:
          registry: ${{ env.GHCR_REGISTRY }}
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      # Get metadata from repo
      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v3
        with:
          images: ${{ env.GHCR_REGISTRY }}/${{ env.IMAGE_NAME }}
          labels: |
            org.opencontainers.image.version=${{ steps.semantic-gitcommit.outputs.version }}

      # Set up QEMU for multi-arch builds
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v1

      # Set up buildx for multi platform builds
      - name: Set up Docker Buildx
        id: buildx
        uses: docker/setup-buildx-action@v1

      # Build only (if not push to main branch)
      - name: Build only - ${{ matrix.image }}
        if: ${{ github.event_name != 'push' && github.ref != 'refs/heads/main' }}
        uses: docker/build-push-action@v2
        with:
          build-args: IMAGE_VERSION="${{ steps.semantic-gitcommit.outputs.version }}"
          context: .
          file: docker/${{ matrix.image }}/Dockerfile
          platforms: linux/amd64,linux/arm64
          push: false
          tags: ghcr.io/${{ env.GHCR_IMAGE }}:${{ matrix.image }},ghcr.io/${{ env.GHCR_IMAGE }}:${{ matrix.image }}_${{ steps.semantic-gitcommit.outputs.version }}
          labels: ${{ steps.meta.outputs.labels }}

      # Build & Push (if push to main branch)
      - name: Build & Push - ${{ matrix.image }}
        if: ${{ github.event_name == 'push' && github.ref == 'refs/heads/main' }}
        uses: docker/build-push-action@v2
        with:
          build-args: IMAGE_VERSION="${{ steps.semantic-gitcommit.outputs.version }}"
          context: .
          file: docker/${{ matrix.image }}/Dockerfile
          platforms: linux/amd64,linux/arm64
          push: true
          tags: ghcr.io/${{ env.GHCR_IMAGE }}:${{ matrix.image }},ghcr.io/${{ env.GHCR_IMAGE }}:${{ matrix.image }}_${{ steps.semantic-gitcommit.outputs.version }},ghcr.io/${{ env.GHCR_IMAGE }}:latest