Additional clean-up of apt dependencies

[itkojika]

Is this a docs issue?

• [X] My issue is about the documentation content or website

Type of issue

Other

Description

In the command to uninstall the other unofficial docker packages using apt, the command will remove the binaries, but not the configuration files associated with them.

Location

https://docs.docker.com/engine/install/ubuntu/

Suggestion

It would be nice to add remove --purge option in the docs to also remove the config files related to those apt packages.