docker_build_push.yml

name: ci

on:
  push:
    branches:
      - 'main'
    tags:
      - "v*.*.*"
    
jobs:
  docker:
    runs-on: ubuntu-latest
    steps:
      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          # list of Docker images to use as base name for tags
          images: |
            ghcr.io/${{ github.repository_owner }}/nothingtoseehere            
          # generate Docker tags based on the following events/attributes
          tags: |
            type=schedule
            type=ref,event=branch
            type=ref,event=pr
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{major}}
            type=sha
            type=raw,value=latest,enable={{is_default_branch}} 
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
      - name: Login to GitHub Container Registry
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}      
      - name: Build and push
        uses: docker/build-push-action@v5
        with:
          context: "{{defaultContext}}:"
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          file:
            ./Dockerfile
          platforms: linux/amd64,linux/arm64

  build-push-singularity-container:
    needs: docker
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
    container:
        image: quay.io/singularity/singularity:v4.1.0
        options: --privileged
    name: Pull-push Singularity Container
    steps:
      - name: Check out code for the container builds
        uses: actions/checkout@v4
      - name: Install dependencies
        run: |
          apk add --no-cache curl
          VERSION="1.1.0"
          curl -LO "https://github.com/oras-project/oras/releases/download/v${VERSION}/oras_${VERSION}_linux_amd64.tar.gz"
          mkdir -p oras-install/
          tar -zxf oras_${VERSION}_*.tar.gz -C oras-install/
          sudo mv oras-install/oras /usr/local/bin/
          rm -rf oras_${VERSION}_*.tar.gz oras-install/
      - name: Docker meta 
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: |
            ghcr.io/${{ github.repository_owner }}/nothingtoseehere            
          tags: |
            type=semver,pattern={{version}}
            type=ref,event=branch
            type=sha
            type=raw,value=latest,enable={{is_default_branch}}
      - name: Pull and push Singularity container
        run: |
          tags="${{ steps.meta.outputs.tags }}"
          tags_array=
          old_ifs="$IFS"
          IFS=$'\n'
          for tag in $tags; do
              tags_array="$tags_array $tag"
          done
          IFS="$old_ifs"
          echo ${{ secrets.GITHUB_TOKEN }} | oras login --username ${{ github.repository_owner }} --password-stdin ghcr.io
          for tag in $tags_array; do
            echo "processing tag: $tag"
            singularity pull nothingtoseehere.sif docker://"$tag"
            oras push "$tag" --artifact-type application/vnd.acme.rocket.config nothingtoseehere.sif
            rm nothingtoseehere.sif
          done
        shell: sh