ci-cd-pipeline

# CI/CD Pipeline Patterns GitHub Actions workflows for consistent, fast, and reliable delivery pipelines. ## Workflow Structure ```yaml # .github/workflows/ci.yml name: CI on: push: branches: [main, develop] pull_request: branches: [main] workflow_dispatch: # manual trigger concurrency: group: ${{ github.workflow }}-${{ github.ref }} cancel-in-progress: true # cancel outdated runs on same branch jobs: lint: runs-on: ubuntu-latest steps: - uses: actions/checkout@v4 - uses: actions/setup-node@v4 with: node-version: '20' cache: 'npm' - run: npm ci - run: npm run lint test: runs-on: ubuntu-latest needs: lint # runs after lint passes steps: - uses: actions/checkout@v4 - uses: actions/setup-node@v4 with: node-version: '20' cache: 'npm' - run: npm ci - run: npm test -- --coverage build: runs-on: ubuntu-latest needs: test steps: - uses: actions/checkout@v4 - uses: actions/setup-node@v4 with: node-version: '20' cache: 'npm' - run: npm ci - run: npm run build ``` ## Matrix Builds Test across multiple versions and operating systems in parallel. ```yaml jobs: test: strategy: fail-fast: false # don't cancel others if one fails matrix: node: ['18', '20', '22'] os: [ubuntu-latest, macos-latest, windows-latest] ...