For this section of the article, you will need a Node.js environment installed and ready, including the node package manager (npm). If you do not already have these packages installed, you can find instructions for installing them at https://docs.npmjs.com/getting-started/installing-node.

You can check whether or not Node.js is installed correctly by using the node -v command.

You'll also need Docker CE and a Docker Hub account to push a new image. You can find instructions to install Docker CE at https://docs.docker.com/installation/. You can easily create a DockerHub account at https://hub.docker.com/.

After you have your credentials, you can log in with the CLI using the $ docker login command.