name: Build Docker image

on:
  workflow_dispatch:
  push:
    branches:
      - '**'
    tags:
      - 'v*'
  # pull_request:

env:
  DOCKER_IMAGE: archivebox-ci


jobs:
  buildx:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v2
        with:
          submodules: true
          fetch-depth: 1

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v1
      
      - name: Set up Docker Buildx
        id: buildx
        uses: docker/setup-buildx-action@v1
        with:
          version: latest
          install: true
      
      - name: Builder instance name
        run: echo ${{ steps.buildx.outputs.name }}
      
      - name: Available platforms
        run: echo ${{ steps.buildx.outputs.platforms }}
      
      - name: Cache Docker layers
        uses: actions/cache@v2
        with:
          path: /tmp/.buildx-cache
          key: ${{ runner.os }}-buildx-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-buildx-

      - name: Docker Login
        uses: docker/login-action@v1
        if: github.event_name != 'pull_request'
        with:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
      
      - name: Collect Docker tags
        id: docker_meta
        uses: crazy-max/ghaction-docker-meta@v1
        with:
          images: archivebox/archivebox,nikisweeting/archivebox
          tag-sha: true
          tag-semver: |
            {{version}}
            {{major}}.{{minor}}
      
      - name: Build and push
        id: docker_build
        uses: docker/build-push-action@v2
        with:
          context: ./
          file: ./Dockerfile
          builder: ${{ steps.buildx.outputs.name }}
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.docker_meta.outputs.tags }}
          cache-from: type=local,src=/tmp/.buildx-cache
          cache-to: type=local,dest=/tmp/.buildx-cache
          platforms: linux/amd64,linux/386,linux/arm64,linux/arm/v7

      - name: Image digest
        run: echo ${{ steps.docker_build.outputs.digest }}