🐳 Dockerized Node.js + MongoDB App

A simple Express.js backend application containerized using Docker, connected to MongoDB, and integrated with Mongo Express for visual database access. This project demonstrates multi-container orchestration using Docker Compose and basic CRUD functionality via REST API.

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Docker Hub :

https://hub.docker.com/repository/docker/adityagarasangi0/docker-node-mongo-app/general

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📦 Tech Stack

• Node.js (Express)
• MongoDB
• Mongo Express
• Docker & Docker Compose

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🚀 How to Run

1. Clone the repository

git clone https://github.com/yourusername/docker-node-mongo-app.git
cd docker-node-mongo-app

2. Start the containers

docker compose up -d --build

3. Access the services

• Node.js App: http://localhost:5050
• Mongo Express UI: http://localhost:8081

📬 API Endpoints

Method	Endpoint	Description
GET	/getUsers	Get all users
POST	/addUser	Add a new user

💾 Docker Volumes

MongoDB data is persisted on the host using a volume:

volumes:
  - /run/desktop/mnt/host/e/data:/data/db

This ensures that data is retained even after containers are stopped or removed.

📷 Screenshots

✅ Node.js App Running

Express app running on port 5050 with static HTML form.

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✅ Mongo Express UI

Mongo Express connected to MongoDB container.

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✅ Docker Compose Up

Docker Compose command used to build and run services.

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✅ Docker Containers Running

docker ps showing all containers running with correct ports

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✅ API Response – /getUsers

Sample JSON output from the /getUsers endpoint showing user records fetched from MongoDB.

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✅ Docker Hub Image

Project image available publicly on Docker Hub.

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📂 Project Structure

docker-node-mongo-app/
├── node_modules/
├── public/
│   ├── index.html
│   └── style.css
├── docker-compose.yml
├── Dockerfile
├── package.json
├── package-lock.json
└── server.js

🛠️ Future Improvements

• Add health checks for services
• Add .env file support for better config management
• Integrate CI/CD pipeline using GitHub Actions

🧠 Notes

• App connects to MongoDB via internal Docker DNS (mongo as the hostname)
• Mongo Express provides a UI for inspecting collections and documents
• All services are defined and managed via docker-compose.yml