Simple NodeJS Multistage Build

Dockerfile

FROM node:10 as build
MAINTAINER dhavaln
LABEL description="This is a multi-stage NodeJS image"
WORKDIR /src
COPY package*.json .
RUN npm install
COPY . .

FROM node:10-slim
WORKDIR /src 
COPY --from=build /src .
EXPOSE 8080
CMD ["node", "index.js"]

index.js

'use strict';
const express = require('express');

// Constants
const PORT = 8080;
const HOST = '0.0.0.0';

// App
const app = express();
app.get('/', (req, res) => {
  res.send('Hello world\n');
});

app.listen(PORT, HOST);
console.log(`Running on http://${HOST}:${PORT}`);

package.json

{
  "name": "multistage-test",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
  },
  "keywords": [],
  "author": "dhavaln",
  "license": "ISC",
  "dependencies": {
    "express": "^4.17.1"
  }
}