name: Nightly Release
on:
  schedule:
    - cron: '0 0 * * *'
  workflow_dispatch: {}
jobs:
  check-date:
    name: Check dates
    runs-on: ubuntu-latest
    outputs:
      should-run: ${{ steps.code-change.outputs.should-run }}
    steps:
      - name: Checkout repository
        uses: actions/checkout@v2
      - name: Check if code has changed with 24 hours
        continue-on-error: true
        id: code-change
        run: |
          [[ $(git rev-list --after="24 hours" --first-parent HEAD) ]] && echo "::set-output name=should-run::true"
  build-release:
    name: Build and release Docker image
    runs-on: ubuntu-latest
    needs: check-date
    if: needs.check-date.outputs.should-run == 'true'
    steps:
      - name: Checkout repository
        uses: actions/checkout@v2
      - name: Login into GitHub Container Registry
        run: echo ${{ secrets.CR_PAT }} | docker login ghcr.io -u $GITHUB_ACTOR --password-stdin
      - name: Build Docker image
        run: |
          docker build \
          -t "ghcr.io/${GITHUB_REPOSITORY}:${GITHUB_SHA:0:7}" \
          -t "ghcr.io/${GITHUB_REPOSITORY}:nightly" .
      - name: Release Docker image
        run: |
          docker push "ghcr.io/${GITHUB_REPOSITORY}:${GITHUB_SHA:0:7}"
          docker push "ghcr.io/${GITHUB_REPOSITORY}:nightly"