docker.yml

# This action is used for building multiply applications to DockerHub at one time
# It need LABEL version="" at your dockerfile. And it can divide version. e.g version v3.4.0.3 will divide to latest,v3,v3.4,v3.4.0,v3.4.0.3
# When version include "-", it not divide version and build ony one test image
# It have enable multiPlatform, you add more platform at platform: linux/amd64...
# If you add more paths for trigger, please update app_list= at set-matrix for it also

name: Build image to DockerHub

on:
  push:
    branches: [main]
    paths:
      - "apps/*/Dockerfile"
      - "apps/*/cmd.sh"
      - "apps/*/entrypoint.sh"

jobs:
  setup:
    runs-on: ubuntu-latest
    outputs:
      matrix: ${{ steps.set-matrix.outputs.matrix }}
    steps:
    - name: Checkout code
      uses: actions/checkout@v3
      with:
        fetch-depth: 2

    - id: set-matrix
      run: |
        git diff --name-only HEAD^ HEAD
        changed_files=$(git diff --name-only HEAD^ HEAD)
        app_list=$(echo "$changed_files" | grep -E 'apps/.*/(Dockerfile|cmd.sh|entrypoint.sh)' | awk -F'/' '{print $2}' | sort | uniq)
        app_list_json=$(echo $app_list | jq -R -s -c 'split(" ")')
        echo "::set-output name=matrix::{\"app\": $app_list_json}"

  build:
    needs: setup
    runs-on: ubuntu-latest
    strategy:
      matrix: ${{fromJson(needs.setup.outputs.matrix)}}
    steps:
    - name: Checkout code
      uses: actions/checkout@v3
      with:
        fetch-depth: 2

    - name: Prepare tags and files for Docker build
      run: |
        APP=${{ matrix.app }}
        TAG=$(grep 'org.opencontainers.image.version' "apps/$APP/Dockerfile" | cut -d'"' -f2 | xargs)
        echo $APP version is $TAG
        if [[ "$TAG" == *"-"* ]]; then
          TAGS="$TAG"
        else
          IFS='.' read -ra PARTS <<< "$TAG"
          TAGS="latest"
          TAG_PART=""
          for i in "${!PARTS[@]}"; do 
            if [ "$i" -eq 0 ]; then 
              TAG_PART="${PARTS[$i]}"
            else 
              TAG_PART="${TAG_PART}.${PARTS[$i]}"
            fi
            TAGS="${TAGS},${TAG_PART}"
          done
        fi
        echo "Building and pushing Docker image for $APP with tags: $TAGS"
        echo "TAGS=$TAGS" >> $GITHUB_ENV
        echo "APP=$APP" >> $GITHUB_ENV
        echo "DOCKERFILE=apps/$APP/Dockerfile" >> $GITHUB_ENV
        echo "DIRECTORY=apps/$APP" >> $GITHUB_ENV
        echo "README=apps/$APP/README.md" >> $GITHUB_ENV

    - name: Build & push Docker image
      uses: mr-smithers-excellent/docker-build-push@v6
      with:
        image: websoft9dev/${{env.APP}}
        tags: ${{env.TAGS}}
        registry: docker.io
        directory: ${{env.DIRECTORY}}
        dockerfile: ${{env.DOCKERFILE}}
        multiPlatform: true
        platform: linux/amd64
        username: ${{ secrets.DOCKER_USERNAME }}
        password: ${{ secrets.DOCKER_PASSWORD }}

    - name: Docker Hub Description
      uses: peter-evans/dockerhub-description@v3
      with:
        username: ${{ secrets.DOCKER_USERNAME }}
        password: ${{ secrets.DOCKER_PASSWORD }}
        repository: websoft9dev/${{env.APP}}
        readme-filepath: ${{env.README}}
      if: needs.setup.outputs.matrix != ''