This website is/has been used for a Docker workshop.
Throughout the workshop, there will be blocks where you type as file contents and others where you type in a shell prompt.
File contents looks like:
This is
some
file contents
Things you should execute should start with $ prompts:
$ docker ps
$ date
The $ is a subtle difference, but should be enough to distinguish.
This workshop was spawned from a few local Docker talks given by Spencer Herzberg.
Slides for the latest one are here:
Spencer Herzberg