The price wtf :O

You don’t need to especially not in your local network, but if you want to expose it to the internet then it would definitely make sense since you need a domain in order to use SSL encryption.

There are still people running Windows Servers? An Active Directory Domain Controller can easily be set up on Linux.

Yes I personally find it much quicker running a few commands via SSH and editing Docker compose files in a text editor than clicking around in some kind of web interface. It’s also much easier asking for help or helping someone else I you can just send commands to execute instead of explaining different menus and buttons they need to go into.