npm with Docker makes it easy to package and ship Node.js applications. npm with Docker also enables developers to share their code easily. npm with Docker is an excellent tool for JavaScript developers who want to share their code with others.

Dockerfile for npm start

npm start is frequently used command to run a node application like: Reactjs. Use can use the below Dockerfile for running node applications with Docker. Create a file named Dockerfile in the project base directory and add the below code. Make sure to change the value of EXPOSE to the port application runs on. Also assuming that your application runs with npm start command. Now, build a docker image for your application. In a terminal, run the following command from the application base directory. Once the image build is completed, you can run your application. That’s it.