Dockerizing a simple Node.js app

The goal of this article is to show how to get a Node.js application into a Docker container.

First of all we will create a sample node app and then,

Build a Docker image of that application and run it

Setting up Node app Create a directory and run the command npm init to initialize the app and install initial dependencies Create a file app.js and write this code inside it. The next step is to add Docker to it. So, create an empty file named Dockerfile and put this code inside it Now add .dockerignore file to prevent your local modules and logs to be copied onto your Docker image and add this two files Now we need to build our Docker image and run it. This can be done by the following command :