build_and_publish.yml

name: Build & Push

on:
  workflow_dispatch:

env:
  # Pin the base version of traefik-forward-auth to download and include in final image
  # https://github.com/thomseddon/traefik-forward-auth/releases
  VERSION: 2.3.0
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  build_and_push:
    name: Build & Push image to registry
    runs-on: ubuntu-24.04

    permissions:
      packages: write
      contents: read
      attestations: write
      id-token: write

    steps:
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3.2.0

      - name: Set up Buildx
        uses: docker/setup-buildx-action@v3.7.1

      - name: Login to the registry
        uses: docker/login-action@v3.3.0
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Configure metadata
        id: meta
        uses: docker/metadata-action@v5.6.1
        env:
          DOCKER_METADATA_ANNOTATIONS_LEVELS: index
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=semver,pattern={{version}},value=${{ env.VERSION }}
            type=semver,pattern={{major}}.{{minor}},value=${{ env.VERSION }}
            type=semver,pattern={{major}},value=${{ env.VERSION }}
          annotations: |
            org.opencontainers.image.authors="Thom Seddon"
            org.opencontainers.image.url=https://github.com/flokod/traefik-forward-auth
            org.opencontainers.image.source=https://github.com/thomseddon/traefik-forward-auth
            org.opencontainers.image.version=${{ env.VERSION }}
            org.opencontainers.image.licenses=MIT

      - name: Build and push Docker image
        id: push
        uses: docker/build-push-action@v6.10.0
        with:
          platforms: linux/amd64,linux/arm
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          annotations: ${{ steps.meta.outputs.annotations }}
          build-args: |
            VERSION=${{ env.VERSION }}