name: Create Nginx image

on:
  push:
    branches:
      - main
    paths:
      - 'docker/**/nginx/**'

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: 2martens/docker-nginx

jobs:
  create-nginx:
    name: Build Nginx image
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      attestations: write
      id-token: write
    strategy:
      matrix:
        env: [ test ]
    environment: ${{ matrix.env }}
    steps:
      - uses: actions/checkout@v4
      - name: Perform docker login
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=raw,value=${{ matrix.env }}
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
      - name: Build & push Nginx image to GHCR
        id: push
        uses: docker/build-push-action@v6
        with:
          platforms: linux/amd64,linux/arm64
          context: docker/${{ matrix.env }}/nginx
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
      - name: Attest
        uses: actions/attest-build-provenance@v2
        id: attest
        with:
          subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          subject-digest: ${{ steps.push.outputs.digest }}