Node.js Demo App with CI/CD using GitHub Actions & DockerHub

This is a simple Node.js application that demonstrates how to set up a CI/CD pipeline using GitHub Actions and DockerHub. The pipeline automatically builds, tests, and deploys the Docker image to DockerHub whenever changes are pushed to the main branch.

🔗 GitHub Repository 👉 GitHub: jaspreet237/nodejs-demo-app
👉 Youtube Link : https://youtube.com/shorts/Ys0DX15pdaA?feature=share

🛠 Tech Stack

Node.js (HTTP server)
Docker
GitHub Actions (CI/CD)
DockerHub (Image registry)

📁 Project Structure

nodejs-demo-app/

├── .github/

│ └── workflows/

│ └── main.yml # GitHub Actions pipeline

├── Dockerfile # Docker build instructions

├── .dockerignore # Docker ignore rules

├── app.js # Main Node.js app

├── package.json # Project metadata & scripts

└── README.md # You’re here!

🚦 CI/CD Pipeline Overview

📌 Trigger

Runs on every push to the main branch

🔧 Pipeline Steps

Checkout code from GitHub
Set up Node.js environment
Run npm install and npm test
Log in to DockerHub
Build Docker image
Push image to DockerHub repository

🔐 GitHub Secrets Required

DOCKERHUB_USERNAME: Your DockerHub username
DOCKERHUB_TOKEN: Your DockerHub access token (not your password)

🧪 Run the App Locally

Make sure Docker is installed and running on your system.

🔽 Pull from DockerHub docker pull /nodejs-demo-app

▶️ Run the container docker run -d -p 3000:3000 /nodejs-demo-app Visit: http://localhost:3000 You’ll see: Hello from Node.js App via GitHub Actions CI/CD

📦 Docker Image Link 👉 DockerHub: jaspreet237/nodejs-demo-app

📚 What I Learned Created a simple Node.js app with HTTP server

Dockerized the application

Set up a full CI/CD pipeline with GitHub Actions

Automated Docker builds and deployment to DockerHub

🔗 GitHub Repository 👉 GitHub: jaspreet237/nodejs-demo-app