Its extremely easy to confuse the interfaces for each of these applications.

BusyBox is just a single executable that defines many common UNIX utilities.

Its very small, so its convenient to use for demonstration purposes.

As part of creating the image, it ran instructions triggered from the onbuild base image that we specified in our Dockerfile that included copying the contents of the current directory to usrsrcapp and running npm install.

One thing you will probably want to do is export a port for accessing your node application, which we cover in the next section.

To push your own image, you will need to change the name of the image.

Instead of demo-app, you will need to create the image using your login name.

Mine is freekrai so my docker build and docker push commands would look like this.

As usual, --rm will remove the container for us when it is stopped.

To determine the IP address, enter this at the command line.

We could specify an alternate port via the environment from the command line like this.

Docker For Mac Node.Js