If you want to do it on your local linux system, it's pretty easy: you just need to install bind9 and use `nameserver 127.0.0.1` in your /etc/resolv.conf

Bind9 has a poor reputation because of how difficult it is to use it to define zones (manage a domain name), but if you want to use it as a resolver, it's basically plug'n'play.

Huge bonus included : if you want to flush the cache, you just need to run `sudo rndc flush`, so you don't have to wait for TTL timeout to test your newly configured domain name when you setup a website (you still have to restart your browser, because most of them do their own dns caching).