Create the Dockerfile

Use docker init to create the Dockerfile

In the past, we had to create Dockerfiles manually. Fortunately, newer versions of Docker support the docker init command that analyses applications and automatically creates Dockerfiles that implement good practices. Run the following command to create a Dockerfile for the app. If your Docker installation doesn’t have the docker init plugin, you’ll have to skip this step. Feel free to accept a newer version of Node.js, but complete all other prompts as shown. You’ll need to run it from the ddd-book/node-app directory.

We are using the Docker CLI, so the docker init command cannot be executed in the terminal below. You can find the Dockerfile in the node-app directory.