developer-roadmap/src/data/projects/multi-container-service.md

title, description, isNew, sort, difficulty, nature, skills, seo, roadmapIds

title	description	isNew	sort	difficulty	nature	skills	seo	roadmapIds
Multi-Container Application	Use Docker Compose to run a multi-container application	false	1500	intermediate	Docker Compose	nodejs docker devops	title description keywords Multi-Container Application Use Docker Compose to run a multi-container application Docker Docker Compose Node.js MongoDB	devops

The goal of this project is to practice using Docker Compose to run a multi-container application in production. You will use Docker Compose to run a Node.js application and a MongoDB database.

Requirements

Create a simple unauthenticated Node.js API service for creating a simple todo list. The API should have the following endpoints:

• GET /todos — get all todos
• POST /todos — create a new todo
• GET /todos/:id — get a single todo by id
• PUT /todos/:id — update a single todo by id
• DELETE /todos/:id — delete a single todo by id

The API should connect to MongoDB to store the todo items. You can use Express for the API and Mongoose to connect to MongoDB. You can use nodemon to automatically restart the server when the source code changes.

Requirement #1 - Dockerize the API

You are required to dockerize the API and have a docker-compose.yml file which will spin up a MongoDB container and the API container. If everything works, you should be able to access the API via http://localhost:3000 and the todos should be saved to the MongoDB container. Data should be persisted when the containers are stopped and started.

Requirement #2 - Setup a remote server

Setup a remote server on Digital Ocean, AWS or any other cloud provider. You should use terraform to create the server and Ansible to configure it properly i.e. setup docker, docker-compose, pulling the image from Docker Hub and running the containers.

Requirement #3 - Setup a CI/CD pipeline

Once you have everything working locally, push your code to GitHub and setup a CI/CD pipeline to deploy the application to the remote server. You can use GitHub Actions to setup the pipeline. Make sure to use docker-compose to run the application in the production environment.

Bonus - Setup a reverse proxy

Setup a reverse proxy using Nginx to allow you to access the application via http://your_domain.com. You should use docker-compose to setup the reverse proxy.

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After completing this project, you will have a good understanding of Docker Compose, multi-container applications, CI/CD pipelines, and more.