name: Docker

# This workflow uses actions that are not certified by GitHub.
# They are provided by a third-party and are governed by
# separate terms of service, privacy policy, and support
# documentation.

on:
  workflow_dispatch:
  schedule:
    - cron: '17 6 * * *'
  push:
    branches: [ "main" ]
    # Publish semver tags as releases.
    tags: [ 'v*.*.*' ]
  pull_request:
    branches: [ "main" ]

env:
  # Use docker.io for Docker Hub if empty
  REGISTRY: ghcr.io
  # github.repository as <account>/<repo>
  IMAGE_NAME: ${{ github.repository }}


jobs:
  build:

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

    steps:
      - name: Checkout repository
        uses: actions/checkout@v3

#      - name: Free Disk Space (Ubuntu)
#        uses: jlumbroso/free-disk-space@main

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2

      # Login against a Docker registry except on PR
      # https://github.com/docker/login-action
      - name: Docker login
        uses: docker/login-action@v2
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      # Extract metadata (tags, labels) for Docker
      # https://github.com/docker/metadata-action
      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v4
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}

      # Build and push Docker image with Buildx
      # https://github.com/docker/build-push-action
      - name: Build and push
        id: build-and-push
        uses: docker/build-push-action@v4
        with:
          context: ./docker
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          file: docker/Dockerfile
          cache-from: type=gha
          cache-to: type=gha,mode=max