Enhance Docker configuration and update dependencies for Realtime Agent Studio

- Updated Dockerfile for the API to include build tools for C++11 required for native extensions.
- Revised requirements.txt to upgrade several dependencies, including FastAPI and SQLAlchemy.
- Expanded docker-compose.yml to add MinIO service for S3-compatible storage and improved health checks for backend and engine services.
- Enhanced README.md in the Docker directory to provide detailed service descriptions and quick start instructions.
- Updated mkdocs.yml to reflect new navigation structure and added deployment overview documentation.
- Introduced new Dockerfiles for the engine and web services, including development configurations for hot reloading.

docker/README.md

@@ -1 +1,78 @@
-# Docker Deployment
+# Docker Deployment
+
+This folder contains Docker Compose configuration to run the entire AI VideoAssistant stack.
+
+## Services
+
+| Service | Port | Description |
+|---------|------|-------------|
+| minio | 9000, 9001 | S3-compatible object storage |
+| backend | 8100 | FastAPI backend API |
+| engine | 8001 | Conversation engine (WebSocket) |
+| frontend | 6000 | React web application |
+
+## Prerequisites
+
+1. Docker and Docker Compose installed
+2. The `engine/data/vad/silero_vad.onnx` VAD model file must exist
+3. Agent configuration in `engine/config/agents/default.yaml`
+
+## Quick Start
+
+```bash
+cd docker
+docker compose up -d
+```
+
+## Access Points
+
+- **Frontend**: http://localhost:6000
+- **Backend API**: http://localhost:8100
+- **Engine WebSocket**: ws://localhost:8001/ws
+- **MinIO Console**: http://localhost:9001 (admin / password123)
+
+## Configuration
+
+### Engine Environment Variables
+
+The engine service uses environment variables for configuration. Key variables:
+
+- `BACKEND_URL`: Backend API URL (default: `http://backend:8100`)
+- `LOG_LEVEL`: Logging level (default: `INFO`)
+- `CORS_ORIGINS`: Allowed CORS origins
+
+Agent-specific settings (LLM, TTS, ASR) are configured via YAML files in `engine/config/agents/`.
+
+### Volumes
+
+- `minio_data`: MinIO storage data
+- `backend_data`: Backend SQLite database
+- `engine_logs`: Engine log files
+
+## Development Mode
+
+To mount source code for hot-reload during development:
+
+```bash
+docker compose -f docker-compose.yml -f docker-compose.dev.yml up -d
+```
+
+## Logs
+
+```bash
+# View all logs
+docker compose logs -f
+
+# View specific service logs
+docker compose logs -f engine
+docker compose logs -f backend
+```
+
+## Stopping
+
+```bash
+docker compose down
+
+# Remove volumes as well
+docker compose down -v
+```