docker-publish.yml

name: Docker

on:
  push:
    branches: [ '*' ]
    tags: [ 'v*' ]
  pull_request:
    branches: [ main ]

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

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

    steps:
      - name: Checkout repository
        uses: actions/checkout@v2

      - name: Setup QEMU
        uses: docker/setup-qemu-action@v1

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

      - name: Log into registry
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v1
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract Docker metadata
        id: meta
        uses: docker/metadata-action@v3
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          flavor: |
            latest=false
          tags: |
            type=raw,value=latest,enable=${{ endsWith(github.ref, github.event.repository.default_branch) }}
            type=ref,event=branch
            type=ref,event=tag

      - name: Build and push Docker image
        id: build-and-push
        uses: docker/build-push-action@v2 
        with:
          context: .
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          platforms: linux/amd64,linux/arm64
          cache-from: type=gha
          cache-to: type=gha,mode=max