[Mailman-Developers] running mailman2 supervised

Hello,

I'm porting a mailman installation from a legacy server into docker. To make it not more complicated I decided to stay on the same mailman
version 2.1.29 (build from source)

Now I'm faced to the problem that mailman is started with "mailmanctl start" This fork a daemon running in background. In an ideal docker world
there is only one process per container. If the process return/end, the container terminate.

For now I solved this by running "fghack mailmanctl start" fghack -> https://cr.yp.to/daemontools/fghack.html

Q1: is there a better way to start mailman in some kind of non forking mode? Q2: is it possible to run mailman3 supervised?

Thanks! Andreas