Feature Request

Context

As discussed (off-topic) in #1802 we want to move the wiki to github pages. This will tighten the correlation between the code and documentation. It allows to commit documentation in the same PRs the code changes takes place.

The two tools that were discussed are:

• mkdocs
• docusaurus

I already looked at deploying a static documentation to github pages and would take this as my part.
I want @polarathene and his experience from tests to help keeping the history of the current wiki.

Is your Feature Request related to a Problem?

Documentation and code are currently in a loose relation and it is hard to track changes related to PRs.

Describe the Solution you'd like

Move from wiki to static site generator hosted on github pages. Sites will be build with CI.

Are you going to implement it?

Yes, together with @polarathene.

What are you going to contribute??

I will open a PR later with the basic structures and workflows.

Who will that Feature be useful to?

Everyone looking for documentation on docker-mailserver

What have you done already?

Test mkdocs on github pages inside /docs in the same repository the code lives.