wger/.github/workflows/docker.yml

# https://docs.docker.com/build/ci/github-actions/multi-platform/
name: Build and push Docker images

on:
  push:
    branches:
      - master

env:
  REGISTRY_IMAGE: wger/server
  REGISTRY_IMAGE_ALT: wger/devel

jobs:
  demo:
    name: Build demo image
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v2.2.0

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2.9.0

      - name: Login to DockerHub
        uses: docker/login-action@v2.2.0
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Build image
        uses: docker/build-push-action@v4.1.0
        with:
          context: .
          push: true
          file: extras/docker/demo/Dockerfile
          platforms: linux/amd64,linux/arm64
          tags: wger/demo:latest,wger/demo:2.2-dev,wger/apache:latest,wger/apache:2.2-dev

  build-prod:
    name: Build production image
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        platform:
          - linux/amd64
          - linux/arm/v7
          - linux/arm64
    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v4
        with:
          tags: |
            latest=true,enable={{is_default_branch}}
            type=raw,value=2.2-dev
          images: |
            ${{ env.REGISTRY_IMAGE }}
            ${{ env.REGISTRY_IMAGE_ALT }}

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v2.2.0

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2.9.0

      - name: Login to Docker Hub
        uses: docker/login-action@v2.2.0
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Build and push by digest
        id: build
        uses: docker/build-push-action@v4
        with:
          context: .
          file: extras/docker/development/Dockerfile
          platforms: ${{ matrix.platform }}
          labels: ${{ steps.meta.outputs.labels }}
          outputs: type=image,name=${{ env.REGISTRY_IMAGE }},push-by-digest=true,name-canonical=true,push=true

      - name: Export digest
        run: |
          mkdir -p /tmp/digests
          digest="${{ steps.build.outputs.digest }}"
          touch "/tmp/digests/${digest#sha256:}"

      - name: Upload digest
        uses: actions/upload-artifact@v3
        with:
          name: digests
          path: /tmp/digests/*
          if-no-files-found: error
          retention-days: 1

  merge:
    runs-on: ubuntu-latest
    needs:
      - build-prod
    steps:
      - name: Download digests
        uses: actions/download-artifact@v3
        with:
          name: digests
          path: /tmp/digests

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2

      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v4
        with:
          images: ${{ env.REGISTRY_IMAGE }}

      - name: Login to Docker Hub
        uses: docker/login-action@v2
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Create manifest list and push
        working-directory: /tmp/digests
        run: |
          docker buildx imagetools create $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
          $(printf '${{ env.REGISTRY_IMAGE }}@sha256:%s ' *)

      - name: Inspect image
        run: |
          docker buildx imagetools inspect ${{ env.REGISTRY_IMAGE }}:${{ steps.meta.outputs.version }}