build-images.yml

name: Build and push Docker images
on:
  push:
    paths:
      - ".github/workflows/**"
    branches:
      - "main"
  pull_request:
    types:
      - opened
      - synchronize

jobs:
  build-image:
    name: Build and push fish image
    runs-on: ubuntu-latest
    strategy:
      matrix:
        version: [
            { fish: 3.0.2, alpine: 3.11 },
            { fish: 3.1.2, alpine: 3.13 },
            { fish: 3.2.2, alpine: 3.14 },
            { fish: 3.3.1, alpine: 3.15 },
            { fish: 3.4.1, alpine: 3.16 },
            { fish: 3.5.1, alpine: 3.17 },
            { fish: 3.6.1, alpine: 3.18 },
            { fish: 3.6.3, alpine: 3.19 },
            { fish: 3.7.0, alpine: "edge" },
            # { fish: 3.6.1, alpine: "edge" }, # priorize latest alpine version
          ]
      fail-fast: false
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: debug
        run: |
          echo "index: ${{ strategy.job-index }}, total: ${{ strategy.job-total }}, equality?: $([ $(expr ${{ strategy.job-index }} + 1) = ${{ strategy.job-total }} ]"
      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5.5.0
        with:
          # list of Docker images to use as base name for tags
          images: |
            purefish/docker-fish
          # ghcr.io/pure-fish/docker-fish # need token
          # generate Docker tags based on the following events/attributes
          tags: |
            type=semver,pattern={{version}},value=${{matrix.version.fish}}
            type=raw,value=latest,enable=${{ strategy.job-index == strategy.job-total - 1 }}
          flavor: |
            latest=false

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Login to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKER_HUB_USERNAME }}
          password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}

      - name: Build fish:${{ matrix.version.fish }} image
        uses: docker/build-push-action@v5
        with:
          push: true
          context: .
          file: ./Dockerfile
          build-contexts: |
            alpine=docker-image://alpine:${{ matrix.version.alpine }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          platforms: linux/amd64,linux/arm64,linux/arm/v7

      - name: Test installed version match expected ${{ matrix.version.fish }}
        run: |
          docker run \
            --rm \
            purefish/docker-fish:${{ matrix.version.fish }} \
              'fish --version | grep ${{ matrix.version.fish }}'