build.yaml

name: Container Images

on:
  push:
    branches:
      - main
  pull_request:
  release:
    types: [published]  # Corrected 'type' to 'types'

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}
  TARGET_DIR: ./.silverback-images
  DOCKERFILE_PATTERN: Dockerfile.*

jobs:
  generate_matrix:
    name: Check and Setup Matrix
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      attestations: write
      id-token: write
    outputs:
      matrix: ${{ steps.find_dockerfiles.outputs.matrix }}
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Check if Directory Exists
        id: check_dir
        run: |
          if [ -d "${{ env.TARGET_DIR }}" ]; then
            echo "Directory exists."
            echo "directory_exists=true" >> $GITHUB_OUTPUT
          else
            echo "Directory does not exist. Creating..."
            mkdir -p "${{ env.TARGET_DIR }}"
            echo "directory_exists=false" >> $GITHUB_OUTPUT
          fi

      - name: Generate Files
        id: gen_files
        if: steps.check_dir.outputs.directory_exists == 'false'
        run: |
          python -m venv venv
          source venv/bin/activate
          pip install --upgrade pip
          pip install -r requirements.txt
          silverback build --generate

      - name: Verify Dockerfiles Exist
        run: |
          if [ ! -d "${{ env.TARGET_DIR }}" ]; then
            echo "Directory '${{ env.TARGET_DIR }}' does not exist. Exiting."
            exit 1
          fi

      - name: Find Dockerfiles
        id: find_dockerfiles
        run: |
          # Find all Dockerfiles matching the pattern
          dockerfiles=$(find "${{ env.TARGET_DIR }}" -type f -name "${{ env.DOCKERFILE_PATTERN }}" | sort)
          echo "Found Dockerfiles:"
          echo "${dockerfiles}"

          dockerfile_array=()
          for df in $dockerfiles; do
            name=$(basename "$df" | sed 's/Dockerfile\.//')
            tag=${name}
            # Properly escape quotes and ensure JSON strings are correctly formatted
            dockerfile_array+=("{\"file\":\"$df\",\"name\":\"$name\",\"tag\":\"$tag\"}")
          done

          # Check if any Dockerfiles were found
          if [ "${#dockerfile_array[@]}" -eq 0 ]; then
            echo "No Dockerfiles found in '${{ env.TARGET_DIR }}'. Exiting..."
            exit 1
          fi

          # Generate a valid JSON matrix
          matrix=$(printf '[%s]' "$(IFS=,; echo "${dockerfile_array[*]}")")
          echo "Matrix JSON: $matrix"

          # Optional: Validate JSON structure using jq (if available)
          echo "$matrix" | jq empty

          # Set the matrix output
          echo "matrix=$matrix" >> $GITHUB_OUTPUT

      - name: Upload Generated Files as Artifact
        if: steps.check_dir.outputs.directory_exists == 'false'
        uses: actions/upload-artifact@v4
        with:
          name: generated-files
          path: ${{ env.TARGET_DIR }}/*

  build-and-push:
    name: Build and Push Docker Images
    needs: generate_matrix
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      attestations: write
      id-token: write
    strategy:
      matrix:
        include: ${{ fromJson(needs.generate_matrix.outputs.matrix) }}
    steps:
      - name: Checkout Repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Display Matrix Variables
        run: |
          echo "Building Dockerfile: ${{ matrix.file }}"
          echo "Image Name: ${{ matrix.name }}"
          echo "Image Tag: ${{ matrix.tag }}"

      - name: Set Lowercase Repository Owner
        id: lowercase_owner
        run: |
          LOWERCASE_OWNER=$(echo "${GITHUB_REPOSITORY_OWNER}" | tr '[:upper:]' '[:lower:]')
          echo "LOWERCASE_OWNER=$LOWERCASE_OWNER" >> $GITHUB_ENV

      - name: Download Generated Files Artifact
        uses: actions/download-artifact@v4
        with:
          name: generated-files
          path: ${{ env.TARGET_DIR }}

      - name: Log into GitHub Container Registry
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v2
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build and Push ${{ matrix.name }} Image
        uses: docker/build-push-action@v4
        with:
          context: .
          file: ${{ matrix.file }}
          push: ${{ github.event_name != 'pull_request' }}
          tags: |
            ${{ env.REGISTRY }}/${{ env.LOWERCASE_OWNER }}/${{ matrix.tag }}:latest