🐳 MCP Dockerized

A containerized Model Context Protocol (MCP) server that can be easily deployed via Docker with extensible tools and secure API key authentication.

Features

• ✅ Containerized Deployment: Easy deployment via Docker Compose

• ✅ Configurable Port: Listen on any port via environment variables

• ✅ Health Check Endpoint: Built-in health monitoring

• ✅ API Key Authentication: Secure access with unlimited API keys

• ✅ Timestamped Logging: Configurable log levels with timestamps

• ✅ Extensible Tools: Abstract tool system for easy extension

• ✅ Console Tool: Execute host machine commands

• ✅ MCP Protocol Compliance: Follows Model Context Protocol specification

• ✅ Tool Discovery: Automatic endpoint to describe all available tools

Related MCP server: mcp-confluent

Quick Start

1. Clone and setup:

   git clone <repository-url>
   cd mcp_dockerized

2. Configure environment (optional):

   cp .env.example .env
   # Edit .env file as needed

3. Start the server:

   docker-compose up -d

4. Get your API key:

   docker-compose logs mcp-server | grep "First API key"

Configuration

Environment Variables

Example .env file:

MCPD_PORT=8000
MCPD_LOG_LEVEL=INFO
MCPD_API_KEY_LENGTH=32

API Endpoints

Health Check

GET /health

Authentication

All API endpoints require a Bearer token in the Authorization header:

Authorization: Bearer <your-api-key>

Core Endpoints

List Tools

GET /api/tools

Returns descriptions of all available tools.

Execute Tool

POST /api/tools/{tool_name}
Content-Type: application/json

{
  "command": "ls -la",
  "timeout": 30
}

Generate New API Key

POST /api/generate-key

MCP Protocol Endpoints

Initialize MCP Connection

GET /api/mcp/initialize

List MCP Tools

GET /api/mcp/tools/list

Call MCP Tool

POST /api/mcp/tools/call
Content-Type: application/json

{
  "name": "console",
  "arguments": {
    "command": "echo 'Hello World'"
  }
}

Available Tools

Console Tool

Execute commands on the host machine.

Parameters:

• command (required): The command to execute

• timeout (optional): Timeout in seconds (default: 30)

• working_directory (optional): Working directory for execution

Example:

{
  "command": "ls -la /tmp",
  "timeout": 15,
  "working_directory": "/home/user"
}

API Key Management

Initial API Key

The server generates an initial API key on first startup. Check the logs:

docker-compose logs mcp-server | grep "API Key generated"

Generate Additional API Keys

Using the API

curl -X POST http://localhost:8000/api/generate-key \
  -H "Authorization: Bearer <existing-api-key>"

Creating Custom Tools

1. Create a New Tool File

Create a new file in the mcp_tools/ directory following the naming pattern *_tool.py:

# mcp_tools/my_custom_tool.py
from typing import Dict, Any
from .base import BaseMCPTool

class MyCustomTool(BaseMCPTool):
    @property
    def name(self) -> str:
        return "my_custom_tool"
    
    @property
    def description(self) -> str:
        return "Description of what my custom tool does"
    
    def get_parameters_schema(self) -> Dict[str, Any]:
        return {
            "type": "object",
            "properties": {
                "input_param": {
                    "type": "string",
                    "description": "Description of the parameter"
                }
            },
            "required": ["input_param"]
        }
    
    async def execute(self, parameters: Dict[str, Any]) -> Any:
        input_param = parameters.get("input_param")
        # Your tool logic here
        return {"result": f"Processed: {input_param}"}

2. Register the Tool

Add your tool to the load_tools() method in main.py:

def load_tools(self):
    # Existing tools...
    
    # Add your custom tool
    from mcp_tools.my_custom_tool import MyCustomTool
    custom_tool = MyCustomTool()
    self.tools[custom_tool.name] = custom_tool
    self.logger.info(f"Loaded tool: {custom_tool.name}")

3. Rebuild and Deploy

docker-compose down
docker-compose build
docker-compose up -d

Development

VS Code Extensions for Testing

For the best development experience, install these VS Code extensions:

Primary Testing Extension

• REST Client (humao.rest-client) - Test API endpoints directly in VS Code

Development Extensions

• Python (ms-python.python) - Python language support

• Python Debugger (ms-python.debugpy) - Advanced Python debugging

• Docker (ms-azuretools.vscode-docker) - Docker container management

• YAML (redhat.vscode-yaml) - YAML file validation

Alternative HTTP Clients

• Thunder Client (rangav.vscode-thunder-client) - Postman-like interface

• Postman (postman.postman-for-vscode) - Official Postman extension

Testing with REST Client

1. Get your API key:

   docker-compose logs mcp-server | grep "First API key"

2. Use your preferred HTTP client to test the API endpoints

3. Use VS Code tasks (Ctrl+Shift+P → "Tasks: Run Task"):

   • Start MCP Server

   • Stop MCP Server

   • Test MCP Server

   • Generate API Key

   • View Server Logs

Local Development Setup

1. Install dependencies:

   pip install -r requirements.txt

2. Run locally:

   python main.py

Testing

Test the health endpoint:

curl http://localhost:8000/health

Test tool listing:

curl -H "Authorization: Bearer <your-api-key>" \
     http://localhost:8000/api/tools

Test console tool:

curl -X POST \
  -H "Authorization: Bearer <your-api-key>" \
  -H "Content-Type: application/json" \
  -d '{"command": "echo Hello World"}' \
  http://localhost:8000/api/tools/console

Security Considerations

• API Keys: Store API keys securely and rotate them regularly

• Console Tool: The console tool can execute any command - use with caution

• Network: Consider running behind a reverse proxy in production

• Container Security: Run as non-root user (already configured)

Monitoring and Logs

View Logs

# All logs
docker-compose logs -f mcp-server

# Only errors
docker-compose logs mcp-server | grep ERROR

# Follow logs
docker-compose logs -f --tail=50 mcp-server

Health Monitoring

The server includes a health check endpoint that's automatically used by Docker Compose:

curl http://localhost:8000/health

Troubleshooting

Server Won't Start

1. Check port availability:

   lsof -i :8000

2. Check logs:

   docker-compose logs mcp-server

API Key Issues

1. Generate new API key using the API:

   curl -X POST http://localhost:8000/api/generate-key \
     -H "Authorization: Bearer <existing-api-key>"

2. Check existing keys:

   cat data/api_keys.json

Tool Execution Fails

1. Check tool parameters schema

2. Verify authentication

3. Check server logs for detailed error messages

License

MIT License - see LICENSE file for details.

Contributing

1. Fork the repository

2. Create a feature branch

3. Add your changes

4. Add tests if applicable

5. Submit a pull request

Support

For issues and questions, please open an issue on the GitHub repository.

Docker Hub Deployment

Pre-built Images

MCP Dockerized is available on Docker Hub with support for multiple Linux platforms:

• Linux AMD64/ARM64/ARM v7: antpavlenkohmcorp/mcp-dockerized:latest

Quick Start with Docker Hub

Linux/macOS:

# Run with default settings
docker run -d -p 8000:8000 antpavlenkohmcorp/mcp-dockerized:latest

# Run with custom environment variables
docker run -d -p 8000:8000 \
  -e MCPD_PORT=8000 \
  -e MCPD_LOG_LEVEL=INFO \
  -v $(pwd)/data:/app/data \
  antpavlenkohmcorp/mcp-dockerized:latest

Windows:

# Run Linux container on Windows (recommended)
docker run -d -p 8000:8000 antpavlenkohmcorp/mcp-dockerized:latest

# Run with persistent data
docker run -d -p 8000:8000 `
  -e MCPD_PORT=8000 `
  -e MCPD_LOG_LEVEL=INFO `
  -v ${PWD}/data:/app/data `
  antpavlenkohmcorp/mcp-dockerized:latest

Using Docker Compose with Docker Hub:

# Update your docker-compose.yml to use the Docker Hub image:
# image: antpavlenkohmcorp/mcp-dockerized:latest

Platform-Specific Pulls

# Force specific architecture (Linux)
docker run --platform linux/amd64 -d -p 8000:8000 antpavlenkohmcorp/mcp-dockerized:latest
docker run --platform linux/arm64 -d -p 8000:8000 antpavlenkohmcorp/mcp-dockerized:latest

# ARM v7 (Raspberry Pi)
docker run --platform linux/arm/v7 -d -p 8000:8000 antpavlenkohmcorp/mcp-dockerized:latest

Building and Publishing Your Own Images

Prerequisites:

1. Docker Desktop with buildx support

2. Docker Hub account

Manual Build Process:

# 1. Enable Docker buildx
docker buildx create --name mcp-builder --use

# 2. Build and push multi-platform
docker buildx build \
  --platform linux/amd64,linux/arm64,linux/arm/v7 \
  --tag YOUR_DOCKERHUB_USERNAME/mcp-dockerized:latest \
  --push .

# 3. Build Windows (on Windows machine)
docker build -f Dockerfile.windows \
  -t YOUR_DOCKERHUB_USERNAME/mcp-dockerized:latest-windows .
docker push YOUR_DOCKERHUB_USERNAME/mcp-dockerized:latest-windows

Automated Builds with GitHub Actions:

The repository includes GitHub Actions workflows for automated building and testing.

For Pull Requests: The workflow will build and test Docker images without requiring any setup.

For Publishing to Docker Hub: If you want to automatically publish images to Docker Hub, set these secrets in your GitHub repository settings (Settings → Secrets and variables → Actions):

• DOCKER_USERNAME: Your Docker Hub username

• DOCKER_PASSWORD: Your Docker Hub password or access token

Note: Without these secrets, the workflow will still build and test the images for pull requests, but won't publish them to Docker Hub.