# «Классический» деплой по SSH
ssh user@server
cd /var/www/my-app
git pull origin main
npm install
npm run build
pm2 restart all

Push → CI (тесты, линт, сборка) → ✅ → Auto Deploy
                                   ❌ → Остановка, уведомление

Трафик → [Blue v1.0] ← текущая production
         [Green v1.1] ← новая версия, тестируется

# После проверки — переключаем трафик:
Трафик → [Green v1.1] ← теперь production
         [Blue v1.0] ← можно откатиться мгновенно

95% трафика → [v1.0]
 5% трафика → [v1.1] ← наблюдаем за метриками

# Если всё хорошо:
 0% трафика → [v1.0]
100% трафика → [v1.1]

Development → Staging → Production
  (dev)       (stage)    (prod)

jobs:
  deploy-staging:
    runs-on: ubuntu-latest
    environment: staging
    steps:
      - uses: actions/checkout@v4
      - run: npm ci && npm run build
      - name: Deploy to staging
        run: ./deploy.sh staging
        env:
          API_URL: ${{ vars.API_URL }}
          API_KEY: ${{ secrets.API_KEY }}

  deploy-production:
    runs-on: ubuntu-latest
    environment: production
    needs: deploy-staging
    steps:
      - uses: actions/checkout@v4
      - run: npm ci && npm run build
      - name: Deploy to production
        run: ./deploy.sh production
        env:
          API_URL: ${{ vars.API_URL }}
          API_KEY: ${{ secrets.API_KEY }}

Push в main     → https://my-app.vercel.app (production)
Push в feature  → https://my-app-abc123.vercel.app (preview)

name: Deploy to Vercel

on:
  push:
    branches: [main]

jobs:
  deploy:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Install Vercel CLI
        run: npm install -g vercel

      - name: Pull Vercel config
        run: vercel pull --yes --token ${{ secrets.VERCEL_TOKEN }}

      - name: Build
        run: vercel build --prod --token ${{ secrets.VERCEL_TOKEN }}

      - name: Deploy
        run: vercel deploy --prebuilt --prod --token ${{ secrets.VERCEL_TOKEN }}

name: Deploy to Netlify

on:
  push:
    branches: [main]

jobs:
  deploy:
    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 build

      - name: Deploy to Netlify
        uses: nwtgck/actions-netlify@v3
        with:
          publish-dir: './dist'
          production-branch: main
          deploy-message: 'Deploy from GitHub Actions'
        env:
          NETLIFY_AUTH_TOKEN: ${{ secrets.NETLIFY_AUTH_TOKEN }}
          NETLIFY_SITE_ID: ${{ secrets.NETLIFY_SITE_ID }}

# Этап 1: сборка
FROM node:20-alpine AS build
WORKDIR /app
COPY package*.json ./
RUN npm ci
COPY . .
RUN npm run build

# Этап 2: production-сервер
FROM nginx:alpine
COPY --from=build /app/dist /usr/share/nginx/html
COPY nginx.conf /etc/nginx/conf.d/default.conf
EXPOSE 80
CMD ["nginx", "-g", "daemon off;"]

# Собрать образ
docker build -t my-app .

# Запустить контейнер
docker run -p 3000:80 my-app

# Открыть http://localhost:3000

name: Docker Build & Push

on:
  push:
    branches: [main]

jobs:
  docker:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Login to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_TOKEN }}

      - name: Build and push
        uses: docker/build-push-action@v5
        with:
          push: true
          tags: myuser/my-app:latest

steps:
  - name: Deploy
    run: ./deploy.sh
    env:
      API_KEY: ${{ secrets.API_KEY }}
      DATABASE_URL: ${{ secrets.DATABASE_URL }}

steps:
  - name: Build
    run: npm run build
    env:
      NEXT_PUBLIC_API_URL: ${{ vars.API_URL }}
      NODE_ENV: production

steps:
  - uses: actions/checkout@v4

  - uses: actions/setup-node@v4
    with:
      node-version: '20'
      cache: 'npm'  # автоматическое кэширование!

  - run: npm ci

steps:
  - uses: actions/checkout@v4

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

  - run: npm ci

name: Preview Deploy

on:
  pull_request:
    branches: [main]

jobs:
  preview:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - run: npm ci
      - run: npm run build

      - name: Deploy Preview
        id: deploy
        run: |
          url=$(vercel deploy --token ${{ secrets.VERCEL_TOKEN }})
          echo "url=$url" >> "$GITHUB_OUTPUT"

      - name: Comment PR
        uses: actions/github-script@v7
        with:
          script: |
            github.rest.issues.createComment({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number,
              body: '🚀 Preview: ${{ steps.deploy.outputs.url }}'
            })

- name: Health check
  run: |
    sleep 30
    response=$(curl -s -o /dev/null -w "%{http_code}" https://my-app.com/api/health)
    if [ "$response" != "200" ]; then
      echo "Health check failed with status $response"
      exit 1
    fi
    echo "Health check passed"

- name: Smoke test
  id: smoke
  continue-on-error: true
  run: |
    curl -f https://my-app.com || exit 1

- name: Rollback on failure
  if: steps.smoke.outcome == 'failure'
  run: |
    echo "Smoke test failed, rolling back..."
    vercel rollback --token ${{ secrets.VERCEL_TOKEN }}