Slim NodeJS Containers

This Slim Starter Kit will show you how to build a Node Hello World application and use the Slim platform to secure it for production.
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Attention Node.js developers!

Optimize and harden your containerized applications the easy way — with Slim.AI.

This Starter Kit will help you proactively remove vulnerabilities from your applications.

Simply replace the application code here with your own application, run it through Slim.AI's automated container optimization process, and you'll remove up to 90% of the image's vulnerabilities.

No more chasing down hard to patch vulns that your application isn't even using.

Optimization Results

Result of optimized Node image

Slimming this Node.js container results in a 90% reduction in container size, meaning a significantly reduced attack surface while requiring no new code!

Image Metadata difference

Result of optimized Node image

Get Started

To start this dockerized Node.js application, all you will need is a running Docker daemon. From there, running this app requires just two simple commands executed in the app directory.

  docker build -t node-hw .
  docker run -dp 8080:8080 node-website

From there, you can navigate to localhost:8080 on your host machine.

Sample Application

Our sample application is a simple “Hello World” Node.js express web server.

const express = require('express')
const app = express()
const port = 300

app.get('/', (req, res) => {
  res.send('Hello World!')

app.listen(port, () => {
  console.log(`Example app listening at http://localhost:${port}`)

Replace this placholder code with your own application code and install any necessary dependencies to create your own slimmable container.

Sample Dockerfile

Our Dockerfile builds off of the node:16 base image.

FROM node:latest WORKDIR /usr/src/app

COPY package*.json ./

RUN npm ci

USER node

COPY app.js ./


ENTRYPOINT ["node", "app.js"]

The slimming process reduces the size by 9X to just 86MB.

Try it yourself on Slim.AI