Command-line samples are being copied with the preceding dollar sign

[apetrovskiy]

In examples of command line, there are the dollar signs showing that it's for issuing in a terminal window and new lines start here. These dollar signs are copied within the full command and the user pastes everything into a terminal window

A proposal is not to add the dollar sign, or not to offer the Copy button in similar situations.

In addition, there are places where commands are fixed with their output

[apetrovskiy]

Another thing is that the dollar sign ($) in many (but not all) systems indicates a regular user, whereas the hash sign (#) is for root. When we display issuing docker command on ubuntu without sudo, we don't mention that the user should previous perform some actions to be allowed running docker commands without sudo
I mean that
# docker ps
works out of the box and
$ sudo docker ps
works as well.
However, running
$ docker ps
requires from the user to prepare one's system with Step 2 from here (as an example)
English version