[Samba] running a (secondary) samba DC as docker container

[Stefan G. Weichinger]

As I am learning docker lately I came to the idea of using a docker 
container as a "fallback" DC at sites where there is no budget (or 
understanding) for a 2nd physical DC.

That 2nd DC *might* run as docker container alongside the DM/fileserver, 
right? OK, it should get a separate IP, I assume etc

Aside from the details: does anyone here actually do that?