name: Docker image build and deploy

on:
  push:
    branches: [master]
  release:
    types: [published]

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
      # This is used to complete the identity challenge
      # with sigstore/fulcio when running outside of PRs.
      id-token: write

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

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v2

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

      # Login against a Docker registry except on PR
      # https://github.com/docker/login-action
      - name: Log into ${{ env.REGISTRY }} registry
        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: Extract Docker metadata
        id: meta
        uses: docker/metadata-action@v4
        with:
          images: |
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=ref,event=tag
            type=ref,event=branch
            type=ref,event=pr
            type=sha,format=long
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}

      # Build and push Docker image with Buildx
      # https://github.com/docker/build-push-action
      - name: Build and push Docker image
        id: build-and-push
        uses: docker/build-push-action@v4
        with:
          context: .
          push: true
          cache-from: type=gha
          cache-to: type=gha,mode=max
          platforms: |
            linux/amd64
            linux/arm64
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}