I read someone was trying to get Samba AD working in a container and now I am curious what else you guys are working on.
(PS: If that someone is still working on it you might try running DNS and LDAP in separate containers with samba running bare metal. Samba nor Linux supports windows distributed filesystems so you likely need either a central file share or rsync.)
Running personal active directory hybrid sync with azure, hybrid exchange, a separate red forest for management of vSphere infrastructure, using saltstack for Linux config management. ~50 VMs and containers.