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/.dockerignore

@@ -0,0 +1,132 @@
+# Trading Bot v4 - Docker Ignore File
+# Reduces build context size and prevents sensitive data from being copied
+
+# Dependencies
+node_modules
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Next.js
+.next/
+out/
+build/
+dist/
+
+# Environment files (NEVER copy these!)
+.env
+.env.*
+!.env.example
+.env.local
+.env.development
+.env.test
+.env.production
+
+# Private keys and secrets
+*.pem
+*.key
+*.p12
+*.pfx
+*-key.json
+secrets/
+credentials/
+
+# Testing
+coverage/
+.nyc_output/
+*.test.js
+*.spec.js
+__tests__/
+test/
+
+# Logs
+logs/
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# OS files
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db
+*~
+
+# IDE files
+.vscode/
+.idea/
+*.swp
+*.swo
+*.swn
+.vs/
+
+# Git
+.git/
+.gitignore
+.gitattributes
+
+# Docker
+Dockerfile*
+docker-compose*.yml
+.dockerignore
+
+# CI/CD
+.github/
+.gitlab-ci.yml
+.travis.yml
+azure-pipelines.yml
+
+# Documentation (optional - uncomment if you want to exclude)
+# *.md
+# docs/
+
+# Development tools
+.eslintrc*
+.prettierrc*
+.editorconfig
+tsconfig.tsbuildinfo
+
+# Database files
+*.sqlite
+*.sqlite3
+*.db
+
+# Prisma migrations (include if needed)
+prisma/migrations/
+
+# Screenshots and media
+screenshots/
+*.png
+*.jpg
+*.jpeg
+*.gif
+*.mp4
+*.mov
+
+# Temporary files
+tmp/
+temp/
+*.tmp
+
+# Backup files
+*.bak
+*.backup
+*~
+
+# Python
+__pycache__/
+*.py[cod]
+*.pyo
+*.pyd
+.Python
+*.so
+
+# Large files
+*.zip
+*.tar
+*.tar.gz
+*.rar