Run npm init to initialize a new project. Directory Structureīy the end of this tutorial, our application will be in the following directory structure: appĪs you can see, it's a simple application with a few files for the purposes of this tutorial. If you see a version number, you're good to go. To test if you've installed Yarn, check the version: yarn -v To install Yarn, run this: npm install -g yarn This step is technically optional because you can just stick to npm if you prefer. We will be using Yarn to manage our dependencies.

Restart your computer to ensure the changes can take effect.After it downloads, run the installer until the end.

Visit the official Docker website to get the installer.

If you don't have them installed, follow our how to install Node guide.

Basic ability to use a command line interface.

Express has an entire ecosystem of middleware that can be added quickly to greatly enhance the functionality of your application.Įxpress also comes out-of-the-box with support for routing, response handling, templating, cookies, redirects, meaning you have everything you need to build a great web application. Because of its popularity and ease-of-use, it is a great option for building web applications. Express is a server-side web application framework built-on Node that is minimal, flexible, and robust. What is Express?īefore we begin, let's quickly go over what Express is. We will do this by building a Docker image and run it as a container. In this tutorial, we will learn how to build an Express application that can be run in a Docker container.

This is useful because it allows you to easily scaffold and deploy applications to any platform that supports Docker. Docker is a popular open-source technology for running applications in a containerized environment.

Express server