uday1kiran/sample-nodejs repository overview

Reference: https://buddy.works/guides/how-dockerize-node-application⁠

⁠Dockerfile:

FROM node:12

WORKDIR /app

COPY package.json /app

RUN npm install

COPY . /app

CMD node app.js

EXPOSE 8081

⁠To generate package.json file:

sudo apt install npm

npm i express --save

⁠app.js:

//Load express module with require directive

var express = require('express')

var app = express()

//Define request response in root URL (/)

app.get('/', function (req, res) {

res.send('Hello World!')

})

//Launch listening server on port 8081

app.listen(8081, function () {

console.log('app listening on port 8081!')

})