name: Publier l'image Docker (GHCR)

on:
  push:
    branches: [main]
  workflow_dispatch:

permissions:
  contents: read
  packages: write

jobs:
  build-push:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      # L'étape llama.cpp CUDA a besoin de place : l'image devel pèse ~8 Go et
      # un runner ubuntu-latest n'offre que ~14 Go libres. On purge ce qui est
      # préinstallé et inutile ici (SDK Android, .NET, Haskell…).
      - name: Libérer l'espace disque du runner
        run: |
          sudo rm -rf /usr/local/lib/android /usr/share/dotnet /opt/ghc \
                      /usr/local/.ghcup /opt/hostedtoolcache/CodeQL
          sudo docker image prune -af
          df -h /

      - name: Setup Buildx
        uses: docker/setup-buildx-action@v3

      - name: Connexion à GHCR
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Métadonnées (tags / labels)
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ghcr.io/${{ github.repository }}
          tags: |
            type=raw,value=latest
            type=sha,format=short

      - name: Build & push
        uses: docker/build-push-action@v6
        with:
          context: .
          platforms: linux/amd64
          push: true
          build-args: |
            LOKI_VERSION=${{ github.sha }}
            CUDA_ARCHS=75;86;89
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          # Cache limité : les couches CUDA (plusieurs Go) satureraient le
          # plafond de 10 Go du cache GitHub Actions — on ne cache que le mode
          # min (couches finales), le gain principal restant le cache apt/go.
          cache-from: type=gha
          cache-to: type=gha,mode=min