build-image-dynamic-strategy.yml

name: Dynamic Docker Multi-Platform Build

on:
  push:
    branches:
      - master
  pull_request:
    branches:
      - master

jobs:
  generate-matrix:
    name: Generate Jobs
    runs-on: ubuntu-latest
    outputs:
      strategy: ${{ steps.generate-jobs.outputs.strategy }}
    steps:
      - name: Checkout repository
        uses: actions/checkout@v2
  
      - id: generate-jobs
        name: Generate Jobs
        run: |
          strategy_content=""
          versions=$(ls -d */ | grep '^[0-9]' | sed 's#/##')
          for version in $versions; do
            variants=$(cd $version; ls -d */ | sed 's#/##')
            for variant in $variants; do
              strategy_content="$strategy_content,{\"version\":\"$version\",\"variant\":\"$variant\"}"
            done
          done
          strategy="{\"include\":[ ${strategy_content:1} ]}"
          echo "strategy=$strategy" >> "$GITHUB_OUTPUT"
          jq . <<<"$strategy" # sanity check / debugging aid
  
  
  build:
    needs: generate-matrix
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix: ${{ fromJson(needs.generate-matrix.outputs.strategy) }}
    steps:
      - name: Checkout repository
        uses: actions/checkout@v2

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v1

      - name: Build Docker image for ${{ matrix.version }}-${{ matrix.variant }}
        run: |
          cd ${{ matrix.version }}/${{ matrix.variant }}
          docker buildx build --platform linux/amd64,linux/arm64 -t odyssey/ampache:${{ matrix.version }}-${{ matrix.variant }} .
          cd ../../