docker-publish.yml

name: Docker Publish

on:
  release:
    types: [created]

jobs:
  build-push:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Prepare
        id: prep
        run: |
          DOCKERHUB_IMAGE=cicirello/alpine-plus-plus
          GHCR_IMAGE=ghcr.io/${{ github.repository_owner }}/alpine-plus-plus
          VERSION=${GITHUB_REF#refs/tags/v}
          MINOR=${VERSION%.*}
          MAJOR=${VERSION%%.*}
          TAGS="${DOCKERHUB_IMAGE}:${MAJOR},${DOCKERHUB_IMAGE}:${MINOR}"
          TAGS="${TAGS},${DOCKERHUB_IMAGE}:${VERSION},${DOCKERHUB_IMAGE}:latest"
          TAGS="${TAGS},${GHCR_IMAGE}:${MAJOR},${GHCR_IMAGE}:${MINOR}"
          TAGS="${TAGS},${GHCR_IMAGE}:${VERSION},${GHCR_IMAGE}:latest"
          echo "tags=${TAGS}" >> $GITHUB_OUTPUT
          echo "version=${VERSION}" >> $GITHUB_OUTPUT
          echo "dockerhub_image=${DOCKERHUB_IMAGE}" >> $GITHUB_OUTPUT
          echo "ghcr_image=${GHCR_IMAGE}" >> $GITHUB_OUTPUT

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3
        with:
          platforms: all

      - name: Set up Docker Buildx
        id: buildx
        uses: docker/setup-buildx-action@v3

      - name: Login to DockerHub
        uses: docker/login-action@v3 
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - name: Login to Github Container Registry
        uses: docker/login-action@v3 
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build and push
        uses: docker/build-push-action@v5
        with:
          builder: ${{ steps.buildx.outputs.name }}
          context: .
          file: ./Dockerfile
          platforms: linux/amd64,linux/arm64,linux/ppc64le,linux/s390x,linux/386,linux/arm/v6,linux/arm/v7
          push: true
          tags: ${{ steps.prep.outputs.tags }}
          labels: org.opencontainers.image.version=${{ steps.prep.outputs.version }}