name: Docker image builds

on:
  workflow_dispatch:
  push:
    tags: ["v*"]

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

jobs:
  build:
    runs-on: ubuntu-24.04
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-tags: true
          fetch-depth: 0
          persist-credentials: false

      - name: Set lowercase image name
        id: meta
        shell: bash
        run: |
          echo "image=ghcr.io/${GITHUB_REPOSITORY,,}" >> "$GITHUB_OUTPUT"
          echo "version=$(git describe --tags)" >> "$GITHUB_OUTPUT"

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

      - name: Log into registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build and push
        id: build
        uses: docker/build-push-action@v6
        with:
          context: ./atsf_server
          file: ./atsf_server/Dockerfile
          push: true
          tags: |
            ${{ steps.meta.outputs.image }}:${{ steps.meta.outputs.version }}
            ${{ steps.meta.outputs.image }}:latest
          build-args: |
            VERSION=${{ steps.meta.outputs.version }}
          cache-from: type=gha
          cache-to: type=gha,mode=max
          platforms: linux/amd64,linux/arm64

      - name: Generate artifact attestation
        uses: actions/attest-build-provenance@v3
        with:
          subject-name: ${{ steps.meta.outputs.image }}
          subject-digest: ${{ steps.build.outputs.digest }}
          push-to-registry: true