We describe how to run our pre-built executable within a docker
container. They can figure out the rest from there.
If they don't understand those instructions, they shouldn't be running
their own DNS server.
ns-vultr.nono.io is a bad nameserver because it's shut down for ~8 days
each month (when the unbelievable Singapore hunger for NTP uses up my
monthly allowance of 3TB)
Besides, three nameservers is enough.
