name: docker build

on:
  push:
    branches:
      - master

env:
  USERNAME: maksimstojkovic
  PROJECT: letsencrypt
  PLATFORMS: linux/arm/v7,linux/arm64,linux/amd64

jobs:
  build:
    name: Build Multi-Platform Image and Upload to Docker Hub
    runs-on: ubuntu-latest
    steps:
      - name: Checkout Repo
        uses: actions/checkout@v2
        with:
          ref: 'master'
        
      - name: Setup QEMU
        uses: docker/setup-qemu-action@v1

      - name: Setup Docker Buildx
        uses: docker/setup-buildx-action@v1

      - name: Build and Push
        env:
          DOCKER_TOKEN: ${{ secrets.DOCKER_TOKEN }}
        run: |
          # Login
          echo "$DOCKER_TOKEN" | docker login -u "$USERNAME" --password-stdin

          # Setup build parameters
          BUILD_PARAMS="--platform="$PLATFORMS" --push"

          # Build image as tagged version
          TAG=$(date +%y.%m)
          docker buildx build -t "$USERNAME"/"$PROJECT":"$TAG" $BUILD_PARAMS .

          # Build image as latest version
          TAG=latest
          docker buildx build -t "$USERNAME"/"$PROJECT":"$TAG" $BUILD_PARAMS .