publish-images.yml

name: Build images

on:
  push:
    tags:
      - '*'

jobs:
  setup:
    runs-on: ubuntu-latest
    outputs:
      repo_name: ${{ steps.set_repo_name.outputs.repo_name }}
      image_tag: ${{ steps.set_image_tag.outputs.image_tag }}

    steps:
      - id: set_repo_name
        run: echo "repo_name=$(echo "${{ github.repository }}" | cut -d'/' -f2)" >> $GITHUB_OUTPUT

      - id: set_image_tag
        run: echo "image_tag=${{ github.ref_name }}" >> $GITHUB_OUTPUT

  build-and-push:
    runs-on: ubuntu-latest
    needs: setup
    strategy:
      matrix:
        image:
          - name: gba-postgres
            directory: ./postgres
            build_arg_name: PG_DB_USER
          - name: gba-webserver
            directory: ./gbajs3
            build_arg_name: CLIENT_HOST
          - name: gba-auth-server
            directory: ./auth
          - name: gba-admin-server
            directory: ./admin

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Login to Registry
        run: echo "${{ secrets.GHCR_PAT }}" | docker login ghcr.io -u ${{ github.actor }} --password-stdin

      - name: Build
        env:
          REPO_NAME: ${{ needs.setup.outputs.repo_name }}
          IMAGE_TAG: ${{ needs.setup.outputs.image_tag }}
          BUILD_ARG_NAME: ${{ matrix.image.build_arg_name }}
          BUILD_ARG_VALUE: ${{ secrets[matrix.image.build_arg_name] || '' }}
        run: |
          if [ -n "$BUILD_ARG_NAME" ] && [ -n "$BUILD_ARG_VALUE" ]; then
            echo "Building with docker arg $BUILD_ARG_NAME"

            docker build --build-arg $BUILD_ARG_NAME=$BUILD_ARG_VALUE \
              -t ghcr.io/${{ github.actor }}/${REPO_NAME}/${{ matrix.image.name }}:${IMAGE_TAG} \
              -t ghcr.io/${{ github.actor }}/${REPO_NAME}/${{ matrix.image.name }}:latest \
              ${{ matrix.image.directory }}
          else
            echo "Building with no docker arg"

            docker build -t ghcr.io/${{ github.actor }}/${REPO_NAME}/${{ matrix.image.name }}:${IMAGE_TAG} \
              -t ghcr.io/${{ github.actor }}/${REPO_NAME}/${{ matrix.image.name }}:latest \
              ${{ matrix.image.directory }}
          fi

      - name: Push
        env:
          REPO_NAME: ${{ needs.setup.outputs.repo_name }}
          IMAGE_TAG: ${{ needs.setup.outputs.image_tag }}
        run: |
          docker push ghcr.io/${{ github.actor }}/${REPO_NAME}/${{ matrix.image.name }}:${IMAGE_TAG}
          docker push ghcr.io/${{ github.actor }}/${REPO_NAME}/${{ matrix.image.name }}:latest