GitHub Actions

# .github/workflows/ci.yml
name: CI
 
on:
  push:
    branches: [main, develop]
  pull_request:
    branches: [main, develop]
 
jobs:
  build:
    runs-on: ubuntu-latest
 
    steps:
      - name: Checkout
        uses: actions/checkout@v4
 
      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '20'
          cache: 'npm'
 
      - name: Install dependencies
        run: npm ci
 
      - name: Run linter
        run: npm run lint
 
      - name: Run tests
        run: npm test
 
      - name: Build
        run: npm run build

name: CI
 
on:
  push:
    branches: [main]
  pull_request:
    branches: [main]
 
jobs:
  build:
    runs-on: ubuntu-latest
 
    steps:
      - name: Checkout
        uses: actions/checkout@v4
 
      - name: Setup pnpm
        uses: pnpm/action-setup@v3
        with:
          version: 9
 
      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '20'
          cache: 'pnpm'
 
      - name: Install dependencies
        run: pnpm install --frozen-lockfile
 
      - name: Lint
        run: pnpm lint
 
      - name: Type check
        run: pnpm tsc --noEmit
 
      - name: Test
        run: pnpm test
 
      - name: Build
        run: pnpm build

- name: Setup Node.js
  uses: actions/setup-node@v4
  with:
    node-version: '20'
    cache: 'npm'

- name: Setup pnpm
  uses: pnpm/action-setup@v3
  with:
    version: 9
 
- name: Setup Node.js
  uses: actions/setup-node@v4
  with:
    node-version: '20'
    cache: 'pnpm'

- name: Cache node_modules
  uses: actions/cache@v4
  with:
    path: node_modules
    key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
    restore-keys: |
      ${{ runner.os }}-node-

- name: Cache Next.js build
  uses: actions/cache@v4
  with:
    path: |
      ~/.npm
      ${{ github.workspace }}/.next/cache
    key: ${{ runner.os }}-nextjs-${{ hashFiles('**/package-lock.json') }}-${{ hashFiles('**/*.js', '**/*.jsx', '**/*.ts', '**/*.tsx') }}
    restore-keys: |
      ${{ runner.os }}-nextjs-${{ hashFiles('**/package-lock.json') }}-

jobs:
  test:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        node-version: [18, 20, 22]
 
    steps:
      - uses: actions/checkout@v4
 
      - name: Setup Node.js ${{ matrix.node-version }}
        uses: actions/setup-node@v4
        with:
          node-version: ${{ matrix.node-version }}
          cache: 'npm'
 
      - run: npm ci
      - run: npm test

jobs:
  build:
    runs-on: ubuntu-latest
    env:
      CI: true
      NODE_ENV: test
 
    steps:
      - uses: actions/checkout@v4
 
      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '20'
 
      - name: Install and test
        run: |
          npm ci
          npm test
        env:
          DATABASE_URL: ${{ secrets.DATABASE_URL }}
          API_KEY: ${{ secrets.API_KEY }}

# Access secrets
env:
  DATABASE_URL: ${{ secrets.DATABASE_URL }}
 
# Access GitHub token (automatic)
env:
  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      # ... build steps
 
  deploy:
    needs: build
    runs-on: ubuntu-latest
    # Only deploy on main branch
    if: github.ref == 'refs/heads/main' && github.event_name == 'push'
    steps:
      - name: Deploy
        run: echo "Deploying..."

jobs:
  lint:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - run: npm ci
      - run: npm run lint
 
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - run: npm ci
      - run: npm test
 
  build:
    needs: [lint, test]  # Runs after lint and test pass
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - run: npm ci
      - run: npm run build

- name: Build
  run: npm run build
 
- name: Upload build artifact
  uses: actions/upload-artifact@v4
  with:
    name: build
    path: .next/
    retention-days: 7

deploy:
  needs: build
  runs-on: ubuntu-latest
  steps:
    - name: Download build
      uses: actions/download-artifact@v4
      with:
        name: build
        path: .next/
 
    - name: Deploy
      run: ./deploy.sh

- name: Comment on PR
  uses: actions/github-script@v7
  if: github.event_name == 'pull_request'
  with:
    script: |
      github.rest.issues.createComment({
        issue_number: context.issue.number,
        owner: context.repo.owner,
        repo: context.repo.repo,
        body: '✅ Build passed! Preview: ${{ steps.deploy.outputs.url }}'
      })

# Use workflow_dispatch for manual triggers
on:
  workflow_dispatch:
    inputs:
      environment:
        description: 'Environment to deploy to'
        required: true
        default: 'staging'
        type: choice
        options:
          - staging
          - production

# .github/workflows/reusable-build.yml
name: Reusable Build
 
on:
  workflow_call:
    inputs:
      node-version:
        required: false
        type: string
        default: '20'
 
jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version: ${{ inputs.node-version }}
      - run: npm ci
      - run: npm run build

# .github/workflows/ci.yml
name: CI
 
on: [push, pull_request]
 
jobs:
  call-build:
    uses: ./.github/workflows/reusable-build.yml
    with:
      node-version: '20'

![CI](https://github.com/username/repo/actions/workflows/ci.yml/badge.svg)