@@ -114,6 +114,9 @@ this is essentially just the core part of Docker that runs containers.
The installation instructions for Mac, Windows, and Linux are available at the [Get Docker](https://docs.docker.com/get-docker/) page --
if you want to follow along with the rest of these commands, feel free to complete those installation instructions, and then come back here.
{:.summary}
> N.B. On most Linux distros, you will need to also follow the "post-installation steps" linked at the bottom of the installation page and [here](https://docs.docker.com/engine/install/linux-postinstall/)) in order to run the `docker` command without `sudo` as a non-root user. If you're getting errors about invalid permissions when running any of the following commands, this is probably the issue you are facing.
