How to Deploy a Real Backend-Style Node.Js Application?| S-Logix

Description:
Create a Node.js application file (app.js)
Write a Dockerfile that builds a container image
Build the Docker image
Run the application from the Docker container
This demonstrates how developers package applications into portable Docker images.

Step 1 — Create Project Folder

mkdir node-docker
cd node-docker

Step 2 — Create Node Application File
Create app.js

Command:

nano app.js

Paste:

console.log("Node App Running in Docker");

Save and exit.

Step 3 — Create Dockerfile
Command:

nano Dockerfile

Paste:

FROM node
COPY app.js /
CMD ["node", "/app.js"]

Save and exit.

Step 4 — Build the Docker Image
```
docker build -t nodeapp .
            
```

Step 5 — Run the Docker Container

docker run nodeapp

Output:

Node App Running in Docker

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