nginx-proxy/.github/workflows/build-publish-dispatch.yml

name: Build and publish Docker images on demand

on:
  workflow_dispatch:
    inputs:
      image_tag:
        description: "Image tag"
        type: string
        required: true

jobs:
  multiarch-build:
    name: Build and publish ${{ matrix.base }} image with tag ${{ inputs.image_tag }}
    strategy:
      matrix:
        base: [alpine, debian]
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Retrieve nginx-proxy version
        id: nginx-proxy_version
        run: echo "VERSION=$(git describe --tags)" >> "$GITHUB_OUTPUT"

      - name: Retrieve docker-gen version
        id: docker-gen_version
        run: sed -n -e 's;^FROM docker.io/nginxproxy/docker-gen:\([0-9.]*\).*;VERSION=\1;p' Dockerfile.${{ matrix.base }} >> "$GITHUB_OUTPUT"

      - name: Get Docker tags
        id: docker_meta
        uses: docker/metadata-action@v5
        with:
          images: |
            nginxproxy/nginx-proxy
          tags: |
            type=raw,value=${{ inputs.image_tag }},enable=${{ matrix.base == 'debian' }}
            type=raw,value=${{ inputs.image_tag }},suffix=-alpine,enable=${{ matrix.base == 'alpine' }}
          labels: |
            org.opencontainers.image.authors=Nicolas Duchon <nicolas.duchon@gmail.com> (@buchdag), Jason Wilder
            org.opencontainers.image.version=${{ steps.nginx-proxy_version.outputs.VERSION }}
          flavor: |
            latest=false

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

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

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

      - name: Log in to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build and push the image
        id: docker_build
        uses: docker/build-push-action@v6
        with:
          context: .
          file: Dockerfile.${{ matrix.base }}
          build-args: |
            NGINX_PROXY_VERSION=${{ steps.nginx-proxy_version.outputs.VERSION }}
            DOCKER_GEN_VERSION=${{ steps.docker-gen_version.outputs.VERSION }}
          platforms: linux/amd64,linux/arm64,linux/s390x,linux/arm/v7
          sbom: true
          push: true
          provenance: mode=max
          tags: ${{ steps.docker_meta.outputs.tags }}
          labels: ${{ steps.docker_meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max

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