singularity.yml

name: Singularity Build
on:
  push:
    branches: ['main']
  pull_request:

jobs:
  build-test-containers:
    runs-on: ubuntu-latest
    strategy:
      # Keep going on other deployments if anything bloops
      fail-fast: false
      matrix:
        singularity_version:
          - '3.8.1'

    container:
      image: quay.io/singularity/singularity:v${{ matrix.singularity_version }}
      options: --privileged

    steps:

      - name: Check out code for the container builds
        uses: actions/checkout@v2
        with:
          submodules: recursive

      - name: Build Container
        run: |
         if [ -f Singularity ]; then
            sudo -E singularity build container.sif Singularity
         else
           echo "Singularity is not found."
           echo "Present working directory: $PWD"
           ls
         fi
      
      - name: Set Tag Based on Branch Name
        run: |
          # Get the branch name and set it as the tag
          tag=${GITHUB_REF##*/}-singularity
          echo "Tag is $tag."
          echo "tag=$tag" >> $GITHUB_ENV

      - name: Login and Deploy Container
        if: (github.event_name != 'pull_request')
        run: |
            echo ${{ secrets.GITHUB_TOKEN }} | singularity remote login -u ${{ secrets.GHCR_USERNAME }} --password-stdin oras://ghcr.io
            container_name=$(echo ${GITHUB_REPOSITORY} | tr '[:upper:]' '[:lower:]')
            singularity push container.sif oras://ghcr.io/${container_name}:${tag}