Cgx Mcp Server Docker

An MCP server for managing Docker with natural language!

🪩 What can it do?

• 🚀 Compose containers with natural language
• 🔍 Introspect & debug running containers
• 📀 Manage persistent data with Docker volumes

❓ Who is this for?

• Server administrators: connect to remote Docker engines for e.g. managing a public-facing website.
• Tinkerers: run containers locally and experiment with open-source apps supporting Docker.
• AI enthusiasts: push the limits of that an LLM is capable of!

Demo

A quick demo showing a WordPress deployment using natural language:

https://github.com/user-attachments/assets/65e35e67-bce0-4449-af7e-9f4dd773b4b3

🏎️ Quickstart

Install

Claude Desktop

On MacOS: ~/Library/Application\ Support/Claude/claude_desktop_config.json

On Windows: %APPDATA%/Claude/claude_desktop_config.json

"mcpServers": {
  "mcp-server-docker": {
    "command": "uvx",
    "args": [
      "mcp-server-docker"
    ]
  }
}

docker build -t mcp-server-docker .

"mcpServers": {
  "mcp-server-docker": {
    "command": "docker",
    "args": [
      "run",
      "-i",
      "--rm",
      "-v",
      "/var/run/docker.sock:/var/run/docker.sock",
      "mcp-server-docker:latest"
    ]
  }
}

📝 Prompts

🎻 docker_compose

Use natural language to compose containers. See above for a demo.

Provide a Project Name, and a description of desired containers, and let the LLM do the rest.

This prompt instructs the LLM to enter a plan+apply loop. Your interaction with the LLM will involve the following steps:

1. You give the LLM instructions for which containers to bring up
2. The LLM calculates a concise natural language plan and presents it to you
3. You either:
   • Apply the plan
   • Provide the LLM feedback, and the LLM recalculates the plan

Examples

• name: nginx, containers: "deploy an nginx container exposing it on port 9000"
• name: wordpress, containers: "deploy a WordPress container and a supporting MySQL container, exposing Wordpress on port 9000"

Resuming a Project

When starting a new chat with this prompt, the LLM will receive the status of any containers, volumes, and networks created with the given project name.

This is mainly useful for cleaning up, in-case you lose a chat that was responsible for many containers.

📔 Resources

The server exposes resource templates rather than enumerating currently-running containers:

• docker://containers/{container_id}/logs (text/plain)
• docker://containers/{container_id}/stats (application/json)

Read either URI with a Docker container ID or name.

🔨 Tools

Containers

• list_containers
• create_container
• run_container
• recreate_container
• start_container
• fetch_container_logs
• stop_container
• remove_container

Images

• list_images
• pull_image
• push_image
• build_image
• remove_image

Networks

• list_networks
• create_network
• remove_network

Volumes

• list_volumes
• create_volume
• remove_volume

🚧 Disclaimers

Sensitive Data

DO NOT CONFIGURE CONTAINERS WITH SENSITIVE DATA. This includes API keys, database passwords, etc.

Any sensitive data exchanged with the LLM is inherently compromised, unless the LLM is running on your local machine.

If you are interested in securely passing secrets to containers, file an issue on this repository with your use-case.

Reviewing Created Containers

Be careful to review the containers that the LLM creates. Docker is not a secure sandbox, and therefore the MCP server can potentially impact the host machine through Docker.

For safety reasons, this MCP server doesn't support sensitive Docker options like --privileged or --cap-add/--cap-drop. If these features are of interest to you, file an issue on this repository with your use-case.

🛠️ Configuration

This server uses the Python Docker SDK's from_env method. For configuration details, see the documentation.

Connect to Docker over SSH

This MCP server can connect to a remote Docker daemon over SSH.

Simply set a ssh:// host URL in the MCP server definition:

"mcpServers": {
  "mcp-server-docker": {
    "command": "uvx",
    "args": [
      "mcp-server-docker"
    ],
    "env": {
      "DOCKER_HOST": "ssh://[email protected]"
    }
  }
}

💻 Development

Prefer using Devbox to configure your development environment. The server uses MCP Python SDK v2's high-level MCPServer API and can be inspected directly:

uv sync --all-groups
uv run mcp dev src/mcp_server_docker/server.py:app
# or: npx @modelcontextprotocol/inspector uv run mcp-server-docker

Run the hermetic test and lint suite without a Docker daemon:

uv run pytest
uv run ruff format --check src tests
uv run ruff check src tests

See the devbox.json for helpful development commands.

After setting up devbox you can configure your Claude MCP config to use it:

  "docker": {
    "command": "/path/to/repo/.devbox/nix/profile/default/bin/uv",
    "args": [
      "--directory",
      "/path/to/repo/",
      "run",
      "mcp-server-docker"
    ]
  },