version: '3.8'services:  nextjs:    image: node:20-alpine    working_dir: /app    ports:      - "3000:3000"    environment:      - NODE_ENV=production    volumes:      - ./:/app      - /app/node_modules      - /app/.next    command: sh -c "npm ci && npm run build && npm start"    restart: unless-stopped  nginx:    image: nginx:alpine    ports:      - "80:80"      - "443:443"    volumes:      - ./nginx.conf:/etc/nginx/nginx.conf      - ./ssl:/etc/ssl/certs    depends_on:      - nextjs    restart: unless-stopped# Optional: Add database if needed  postgres:    image: postgres:16-alpine    environment:      POSTGRES_DB: nextapp      POSTGRES_USER: admin      POSTGRES_PASSWORD: secure_password    volumes:      - postgres_data:/var/lib/postgresql/data    restart: unless-stoppedvolumes:  postgres_data: