build_docker.yml

name: Build Docker
on:
  push:
    branches: [ develop, release/** ]
    paths:
      - 'Dockerfiles/**'
      - '.github/workflows/**'
  pull_request:
    branches: [ develop, release/** ]
    paths:
      - 'Dockerfiles/**'
      - '.github/workflows/**'
  
jobs:  
    find-dockerfiles:  
      name: Find Dockerfiles
      runs-on: self-hosted
      outputs:  
        files: ${{ steps.find-files.outputs.files }}  
      steps:  
        - name: Checkout repository  
          uses: actions/checkout@v3  
        - name: Find Dockerfiles  
          id: find-files  
          run: |  
            echo "## Finding all Dockerfiles in the 'Dockerfiles/' directory"  
            FILES=$(find Dockerfiles/ -type f -printf "%f\n" | grep .*Dockerfile)  
            echo "Found Dockerfiles:"  
            echo "$FILES"  
            # Convert the array to JSON array  
            JSON_ARRAY=$(printf '%s\n' "${FILES[@]}" | jq -R . | jq -s . | jq -c .)  
            echo "JSON_ARRAY is"
            echo $JSON_ARRAY
            echo "files=$JSON_ARRAY"  >> $GITHUB_OUTPUT 
    build:  
      name: Build Docker Images
      runs-on: self-hosted  
      needs: find-dockerfiles
      strategy:
        matrix: 
          file: ${{fromJson(needs.find-dockerfiles.outputs.files)}}
      steps:
        - name: Checkout repository  
          uses: actions/checkout@v3  

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

        - name: Build Docker image for ${{matrix.file}}  
          uses: docker/build-push-action@v4  
          with:  
            context: Dockerfiles/ 
            file: Dockerfiles/${{matrix.file}} 
            push: false          
            tags: rocm-examples/dockerci:latest