Package the Server in Docker
Build a reproducible image of your server.
Package the Server in Docker is a free MCP Academy lesson on CoddyKit — lesson 1 of 4. You can read the complete lesson below for free — then practise it hands-on in the browser with a built-in code editor and a 24/7 AI tutor. It is part of the MCP Academy learning path, one of 4 lessons in the course, and your progress syncs across the web and the CoddyKit app.
Why Package at All
To run your server anywhere, you bundle it with its Python and dependencies. Docker wraps all of that into one portable image. 📦
What a Dockerfile Is
A Dockerfile is a plain recipe of steps. Each line tells Docker how to assemble the image that will eventually run your MCP server.
# Dockerfile
FROM python:3.12-slimStart From a Base Image
The first line picks a base image. A slim Python image keeps things small while still giving you a working interpreter to build on.
FROM python:3.12-slimSet a Working Directory
Use WORKDIR to choose the folder inside the image where your code lives. Later commands run relative to this clean, predictable path.
WORKDIR /appCopy In Your Code
The COPY instruction moves files from your machine into the image. Bring in your server code and its dependency list together.
COPY . /appInstall Dependencies
Run pip during the build so the mcp SDK and your libraries are baked into the image, not installed fresh on every start.
RUN pip install --no-cache-dir -r requirements.txtDeclare the Start Command
The CMD line is what runs when the container launches. Point it at your server so the container boots straight into MCP.
CMD ["python", "server.py"]Build the Image
One command turns the recipe into a real image. The -t flag tags it with a name you can reuse later. 🛠️
docker build -t my-mcp-server .Run the Container
Start a container from your image with docker run. For HTTP servers, map a port so the outside world can reach it.
docker run -p 8000:8000 my-mcp-serverKeep Images Lean
Smaller images deploy faster and have less to attack. Skip caches and only copy what you need to keep the build lean.
Reproducible by Design
Anyone who pulls your image gets the exact same environment you built. That reproducibility ends the classic it-works-on-my-machine problem.
Quick Check
Which Dockerfile line decides what runs when the container starts?
Recap: Dockerizing MCP
A Dockerfile picks a base, copies code, installs deps, and sets a start command. Build it into an image and run it the same way anywhere. 🚀
Frequently asked questions
Is the “Package the Server in Docker” lesson free?
Yes — the full text of “Package the Server in Docker” is free to read here on the web, and the MCP Academy course includes 4 lessons in total. To practise it interactively (a built-in code editor and a 24/7 AI tutor) and unlock the rest of the MCP Academy course, upgrade to CoddyKit PRO.
What will I learn in “Package the Server in Docker”?
Build a reproducible image of your server. You practise MCP Academy with hands-on code you run directly in the browser, and a 24/7 AI tutor answers your questions as you work through the lesson.
Do I need any experience to start MCP Academy?
No prior experience is required. MCP Academy on CoddyKit is structured for beginners through advanced learners; this is — lesson 1 of 4, so you can start here or from the beginning and move at your own pace.
How long does the “Package the Server in Docker” lesson take?
Most CoddyKit lessons take about 5–10 minutes. Each one is bite-sized and interactive, so you make steady progress and pick up exactly where you left off across the web and the app.
Can I write and run code in this MCP Academy lesson?
Yes. Every MCP Academy lesson includes a built-in code editor, so you write and run real code right in your browser and get instant AI feedback — no local setup required.
All lessons in this course
- Package the Server in Docker
- Run Behind a Reverse Proxy
- Health Checks & Restarts
- Connect Remote Clients