feat: Add complete Docker containerization for v4

Production & Development Setup:
- Multi-stage Dockerfile with optimized build (node:20-alpine)
- docker-compose.yml for production with PostgreSQL
- docker-compose.dev.yml for development with hot reload
- Dockerfile.dev for development environment
- .dockerignore to reduce build context

Features:
- Health checks for both app and database
- Non-root user security (nextjs:nodejs)
- Resource limits (CPU/memory)
- Volume persistence for logs and database
- PostgreSQL 16 with automatic initialization
- Network isolation with custom bridge network

Helper Scripts:
- docker-build.sh - Build production image
- docker-start.sh - Start all services
- docker-stop.sh - Stop containers safely
- docker-logs.sh - View real-time logs

Documentation:
- DOCKER.md - Complete deployment guide with:
  * Quick start commands
  * Production deployment steps
  * Development hot reload setup
  * Configuration examples
  * Docker commands reference
  * Troubleshooting guide
  * Best practices for security & performance

Configuration:
- Environment-based configuration via .env
- Safe defaults for testing ($50 positions)
- Separate dev/prod compose files
- Debug mode with Node.js inspector (port 9229)
- Log rotation and resource monitoring

Ready for deployment with:
  cd v4 && ./docker-start.sh

v4/docker-compose.yml

@@ -0,0 +1,135 @@
+# Trading Bot v4 - Docker Compose Configuration
+# Production-ready setup with PostgreSQL and monitoring
+
+version: '3.9'
+
+services:
+  # ================================
+  # Trading Bot Application
+  # ================================
+  trading-bot:
+    build:
+      context: ..
+      dockerfile: v4/Dockerfile
+    container_name: trading-bot-v4
+    restart: unless-stopped
+    ports:
+      - "3000:3000"
+    environment:
+      # Node environment
+      NODE_ENV: production
+      PORT: 3000
+      
+      # Load from .env file (create from .env.example)
+      DRIFT_WALLET_PRIVATE_KEY: ${DRIFT_WALLET_PRIVATE_KEY}
+      DRIFT_ENV: ${DRIFT_ENV:-mainnet-beta}
+      API_SECRET_KEY: ${API_SECRET_KEY}
+      SOLANA_RPC_URL: ${SOLANA_RPC_URL}
+      PYTH_HERMES_URL: ${PYTH_HERMES_URL:-https://hermes.pyth.network}
+      
+      # Trading configuration
+      MAX_POSITION_SIZE_USD: ${MAX_POSITION_SIZE_USD:-50}
+      LEVERAGE: ${LEVERAGE:-10}
+      STOP_LOSS_PERCENT: ${STOP_LOSS_PERCENT:--1.5}
+      TAKE_PROFIT_1_PERCENT: ${TAKE_PROFIT_1_PERCENT:-0.7}
+      TAKE_PROFIT_2_PERCENT: ${TAKE_PROFIT_2_PERCENT:-1.5}
+      
+      # Database (if using PostgreSQL)
+      DATABASE_URL: ${DATABASE_URL:-postgresql://postgres:postgres@postgres:5432/trading_bot_v4}
+      
+      # Notifications
+      TELEGRAM_BOT_TOKEN: ${TELEGRAM_BOT_TOKEN:-}
+      TELEGRAM_CHAT_ID: ${TELEGRAM_CHAT_ID:-}
+      DISCORD_WEBHOOK_URL: ${DISCORD_WEBHOOK_URL:-}
+      
+      # n8n integration
+      N8N_WEBHOOK_URL: ${N8N_WEBHOOK_URL:-}
+      TRADINGVIEW_WEBHOOK_SECRET: ${TRADINGVIEW_WEBHOOK_SECRET:-}
+      
+      # Monitoring
+      LOG_LEVEL: ${LOG_LEVEL:-info}
+      DRY_RUN: ${DRY_RUN:-false}
+    
+    volumes:
+      # Mount logs directory
+      - ./logs:/app/logs
+      
+      # Mount for hot reload in development (comment out in production)
+      # - ./v4:/app/v4:ro
+    
+    networks:
+      - trading-net
+    
+    depends_on:
+      postgres:
+        condition: service_healthy
+    
+    healthcheck:
+      test: ["CMD", "node", "-e", "require('http').get('http://localhost:3000/api/health', (r) => {process.exit(r.statusCode === 200 ? 0 : 1)})"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 40s
+    
+    # Resource limits (adjust based on your needs)
+    deploy:
+      resources:
+        limits:
+          cpus: '1'
+          memory: 1G
+        reservations:
+          cpus: '0.5'
+          memory: 512M
+  
+  # ================================
+  # PostgreSQL Database (Optional)
+  # ================================
+  postgres:
+    image: postgres:16-alpine
+    container_name: trading-bot-postgres
+    restart: unless-stopped
+    ports:
+      - "5432:5432"
+    environment:
+      POSTGRES_DB: trading_bot_v4
+      POSTGRES_USER: postgres
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-postgres}
+      POSTGRES_INITDB_ARGS: "--encoding=UTF8 --locale=en_US.UTF-8"
+    volumes:
+      # Persist database data
+      - postgres-data:/var/lib/postgresql/data
+      
+      # Custom initialization scripts (optional)
+      - ./prisma/init.sql:/docker-entrypoint-initdb.d/init.sql:ro
+    networks:
+      - trading-net
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U postgres"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+    deploy:
+      resources:
+        limits:
+          cpus: '0.5'
+          memory: 512M
+        reservations:
+          cpus: '0.25'
+          memory: 256M
+
+# ================================
+# Networks
+# ================================
+networks:
+  trading-net:
+    driver: bridge
+    ipam:
+      config:
+        - subnet: 172.25.0.0/16
+
+# ================================
+# Volumes
+# ================================
+volumes:
+  postgres-data:
+    driver: local