docs: reorganize documentation files and update Docker build process

docs/README.md

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+# n8n-MCP Documentation
+
+Welcome to the n8n-MCP documentation. This directory contains comprehensive guides for installation, configuration, and troubleshooting.
+
+## 📚 Documentation Index
+
+### Getting Started
+- **[Installation Guide](./INSTALLATION.md)** - All installation methods including Docker, manual, and development setup
+- **[Claude Desktop Setup](./README_CLAUDE_SETUP.md)** - Configure Claude Desktop to use n8n-MCP
+- **[Quick Start Tutorial](../README.md)** - Basic overview and quick start instructions
+
+### Deployment
+- **[HTTP Deployment Guide](./HTTP_DEPLOYMENT.md)** - Deploy n8n-MCP as an HTTP server for remote access
+- **[Docker Deployment](../DOCKER_README.md)** - Comprehensive Docker deployment guide
+- **[Docker Testing Results](./DOCKER_TESTING_RESULTS.md)** - Docker implementation test results and findings
+
+### Development
+- **[Implementation Plan](../IMPLEMENTATION_PLAN.md)** - Technical implementation details
+- **[HTTP Implementation Guide](./HTTP_IMPLEMENTATION_GUIDE.md)** - HTTP server implementation details
+- **[Development Setup](./INSTALLATION.md#development-setup)** - Set up development environment
+
+### Reference
+- **[Troubleshooting Guide](./TROUBLESHOOTING.md)** - Solutions for common issues
+- **[API Reference](./API_REFERENCE.md)** - MCP tools and API documentation (if available)
+- **[Environment Variables](./INSTALLATION.md#environment-configuration)** - Configuration options
+
+## 🚀 Quick Links
+
+### For Users
+1. **First Time Setup**: Start with the [Installation Guide](./INSTALLATION.md)
+2. **Claude Desktop Users**: Follow [Claude Desktop Setup](./README_CLAUDE_SETUP.md)
+3. **Remote Deployment**: See [HTTP Deployment Guide](./HTTP_DEPLOYMENT.md)
+
+### For Developers
+1. **Local Development**: See [Development Setup](./INSTALLATION.md#development-setup)
+2. **Docker Development**: Check [Docker README](../DOCKER_README.md)
+3. **Contributing**: Read the implementation plans and guides
+
+## 🐳 Docker Quick Start
+
+```bash
+# Quick start with Docker
+echo "AUTH_TOKEN=$(openssl rand -base64 32)" > .env
+docker compose up -d
+
+# Check health
+curl http://localhost:3000/health
+```
+
+## 📖 Documentation Updates
+
+This documentation is actively maintained. Recent updates include:
+- ✅ Docker deployment support (Phase 1 complete)
+- ✅ Simplified installation process
+- ✅ Enhanced troubleshooting guide
+- ✅ Multiple deployment options
+
+## 🤝 Getting Help
+
+- **Issues**: [GitHub Issues](https://github.com/czlonkowski/n8n-mcp/issues)
+- **Discussions**: [GitHub Discussions](https://github.com/czlonkowski/n8n-mcp/discussions)
+- **Troubleshooting**: [Troubleshooting Guide](./TROUBLESHOOTING.md)
+
+## 📝 License
+
+This project is licensed under the Sustainable Use License. See [LICENSE](../LICENSE) for details.