What is docker-mcp-server CLAUDE.md?

Project instructions for developing and operating a Docker-based MCP server. Docker runs the server in an isolated container, while MCP lets an agent use its commands and data.

Use it to build the TypeScript server, start or restart its container, inspect logs, open a container shell, and understand its HTTP and bearer-token setup.

It collects the repository's build, startup, shutdown, logging, shell, and architecture guidance in one place.

How kenforthewin/docker-mcp-server configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to kenforthewin/docker-mcp-server. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/kenforthewin/docker-mcp-server/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/kenforthewin/docker-mcp-server

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/kenforthewin/docker-mcp-server/claude-md/github.svg)](https://agentmods.dev/instructions/kenforthewin/docker-mcp-server/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/kenforthewin/docker-mcp-server/claude-md"><img src="https://agentmods.dev/badge/instructions/kenforthewin/docker-mcp-server/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/kenforthewin/docker-mcp-server/claude-md"><img src="https://agentmods.dev/badge/instructions/kenforthewin/docker-mcp-server/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 3,167 This file is loaded in full into every session.

When invoked 3,167 The same file — it is already loaded in full.

Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.03167	$0.03167
Opus 5.5	$0.01267	$0.01267
Sonnet 5.5	$0.00633	$0.00633
Haiku 4.5	$0.00317	$0.00317

Measured 2mo ago against content hash e802381590e1, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

docker-mcp-server CLAUDE.md scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -X POST http://localhost:30000 \

CLAUDE.md · 364 lines

How it starts

The opening of the file, as written. The whole thing — 364 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Development Commands

Docker Operations

npm run docker:build - Build the Docker image with server code
npm run docker:up - Start the containerized MCP server
npm run docker:down - Stop and remove the container
npm run docker:logs - View server logs (follow mode)
npm run docker:restart - Rebuild and restart the container
npm run docker:shell - Open bash shell in running container
./reset-docker.sh - Complete reset (stop, clean workspace, rebuild, start)

Local Development

npm run build - Compile TypeScript to JavaScript in /dist
npm install - Install dependencies

High-Level Architecture

This is an MCP (Model Context Protocol) Server that runs entirely inside a Docker container and provides command execution capabilities. The server is exposed via HTTP with bearer token authentication.

Core Components

MCP Server (src/index.ts) - TypeScript server using @modelcontextprotocol/sdk with StreamableHTTPServerTransport
HTTP Transport - Network-based communication on port 30000
Bearer Token Auth - Secure authentication for all requests
Docker Container - Debian-based container with Node.js, Playwright, and the MCP server
Workspace Mount - Host ./tmp directory mounted to container /app/workspace for persistent file storage
Process Management - Tracks background processes with unique IDs and timeouts

Container Environment

Base Image: node:current-trixie (Debian with current Node.js)
Additional Tools: git, xdg-utils, jq, python3, Playwright with dependencies
Server Location: /app (contains built MCP server code)
Working Directory: /app/workspace (mounted from host ./tmp)
Exposed Port: 30000 (mapped to host port 30000)
Container Name: mcp-container

Architecture Changes from Previous Version

OLD (Host-Based):

MCP server ran on host machine
Used stdio transport (stdin/stdout)
Commands executed via docker exec into separate container
Container only provided execution environment

Read the full file on GitHub · 364 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2mo ago First seen · 364 lines · 3,167 tokens per session scan A e802381590e1

Subscribe to this mod's changes

docker-mcp-server CLAUDE.md is an instructions file published in the GitHub repository kenforthewin/docker-mcp-server (6 stars, last pushed 10mo ago), licensed MIT. It adds 3,167 tokens to every session, about $0.0127 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Containers DevOps and cloud

docker-mcp-server CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
docker-mcp-server CLAUDE.mdkenforthewin/docker-mcp-server	Instructions file	6	10mo ago	MIT	A	3,167	Claude Code
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

docker-mcp-server: Instructions file for Claude Code