name: image_generate

on:
  push:
    branches: [ master ]
    paths:
      - '.github/workflows/image_generate.yml'
      - '.github/docker/generate/*'
  schedule:
    - cron: '45 18 28 * *'
  workflow_dispatch:


jobs:
  build:
    permissions:
      contents: read
      packages: write
    runs-on: ubuntu-latest

    steps:

      - name: checkout
        uses: actions/checkout@v3.0.2

      - name: prepare
        id: prepare
        run: |
          OWNER="$(echo ${{ github.repository_owner }} | tr '[:upper:]' '[:lower:]')"
          [ -z "$OWNER" ] && OWNER="$(echo ${{ github.actor }} | tr '[:upper:]' '[:lower:]')"
          [ -n "$OWNER" ] && echo "::set-output name=owner::$OWNER" || exit 1
          IMAGE="$(echo "${{ github.workflow }}" | sed 's/.*_//')"
          [ -n "$IMAGE" ] && echo "::set-output name=image::$IMAGE" || exit 1
          for x in Dockerfile entrypoint.sh; do ln -s .github/docker/$IMAGE/$x; done
          echo "################################################################" && echo "URI=$OWNER/$IMAGE"

      - name: login
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v2.0.0
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: docker
        uses: docker/build-push-action@v3.0.0
        with:
          context: .
          push: ${{ github.event_name != 'pull_request' }}
          tags: ghcr.io/${{ steps.prepare.outputs.owner }}/${{ steps.prepare.outputs.image }}:latest