name: Container image

# Mirrors .gitea/workflows/container.yaml — publishes a multi-arch
# (amd64 + arm64) image to the GitHub Container Registry whenever the
# Gitea→GitHub mirror pushes a `v*` tag. Image lands at
# ghcr.io/axodouble/quptime with tags :vX.Y.Z, :X.Y, and :latest.
on:
  push:
    tags:
      - 'v*'

permissions:
  contents: read
  packages: write

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

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

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

      # GHCR namespaces must be lowercase. Lowercase the repository
      # path once and reuse below so a mixed-case org/repo (e.g.
      # Axodouble/QUptime) still resolves to a valid image reference.
      - name: Resolve image name
        id: img
        run: |
          repo='${{ github.repository }}'
          echo "ref=ghcr.io/${repo,,}" >> "$GITHUB_OUTPUT"

      - name: Compute version
        id: ver
        run: |
          echo "version=${GITHUB_REF_NAME}" >> "$GITHUB_OUTPUT"

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

      - name: Docker metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ steps.img.outputs.ref }}
          tags: |
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=raw,value=latest

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