Lectern/.github/workflows/ci.yml at main · kernelcoffee/Lectern · GitHub

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name: CI

on:
  push:
    branches: [main]
    tags: ["v*"]
  pull_request:
    branches: [main]

# Cancel superseded runs on the same ref.
concurrency:
  group: ci-${{ github.ref }}
  cancel-in-progress: true

jobs:
  backend:
    name: Backend — lint & tests
    runs-on: ubuntu-latest
    defaults:
      run:
        working-directory: backend
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-python@v5
        with:
          python-version: "3.14"
          cache: pip
          cache-dependency-path: backend/pyproject.toml
      - run: pip install -e ".[dev]"
      - name: Ruff (lint)
        run: ruff check .
      - name: Pytest
        run: python -m pytest -q

  frontend:
    name: Frontend — type-check & build
    runs-on: ubuntu-latest
    defaults:
      run:
        working-directory: frontend
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version: "24"
          cache: npm
          cache-dependency-path: frontend/package-lock.json
      - run: npm ci
      - name: Build (tsc + vite)
        run: npm run build

  docker:
    name: Docker — production image builds
    # Build-only validation for branches/PRs. On a version tag the `publish`
    # job builds and pushes instead, so skip this redundant build there.
    if: ${{ !startsWith(github.ref, 'refs/tags/v') }}
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: docker/setup-buildx-action@v3
      - name: Build production image
        uses: docker/build-push-action@v6
        with:
          context: .
          file: Dockerfile
          push: false
          tags: lectern:ci
          cache-from: type=gha
          cache-to: type=gha,mode=max

  publish:
    name: Publish image to GHCR
    # Only on version tags (e.g. v1.2.3), and only once tests have passed.
    if: startsWith(github.ref, 'refs/tags/v')
    needs: [backend, frontend]
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
    steps:
      - uses: actions/checkout@v4
      - uses: docker/setup-buildx-action@v3
      - name: Log in to GHCR
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Image metadata (tags & labels)
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ghcr.io/${{ github.repository }}
          tags: |
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=sha
      - name: Build and push
        uses: docker/build-push-action@v6
        with:
          context: .
          file: Dockerfile
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max