Node.js Demo App CI/CD with GitHub Actions + Docker

📌 Task Overview

Automated the build and deployment of a Node.js application using GitHub Actions and Docker.
The pipeline builds the app, creates a Docker image, pushes it to DockerHub, and allows deployment locally.

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⚙️ Steps Performed

1. Copied App Files

   • Used a simple Node.js app (app.js, package.json, compile.json).

2. Created Dockerfile

   • Added Dockerfile and .dockerignore for containerization.

3. Created GitHub Repository

   • Pushed the project files to a new GitHub repo.

4. Added GitHub Secrets

   • DOCKER_USERNAME → DockerHub username
   • DOCKER_PASSWORD → DockerHub password/token

5. Created Workflow File

   • Added .github/workflows/main.yml with steps for:
     • Checkout
     • Install dependencies
     • Test
     • Build Docker image
     • Push image to DockerHub

6. Pushed Code to GitHub

   • Triggered the GitHub Actions workflow.
   • Workflow successfully built and pushed the image to DockerHub.

7. Deployment

   • Pulled the image from DockerHub locally.
   • Ran the container with:

     docker run -p 3000:3000 l4kshya/nodejs-demo-app:latest

   • Verified app at http://localhost:3000.

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ScreenShots

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✅ Outcome

• Automated CI/CD pipeline completed.
• Docker image successfully available on DockerHub.
• Application tested and deployed locally from the pushed image.