How to set up FreeIPA server running in Docker in DigitalOcean droplet

I followed tutorial (https://www.digitalocean.com/community/tutorials/how-to-set-up-centralized-linux-authentication-with-freeipa-on-centos-7) and from FreeIPA repository (https://github.com/freeipa/freeipa-container) but I want to set up BIND name server handling my zone.

What I should do in control panel of DNS? I left only A and MX records.

But when I set up FreeIPA server, I get this.

Checking DNS domain odisharia.ru., please wait ...
DNS zone odisharia.ru. already exists in DNS and is handled by server(s): []
The ipa-server-install command failed. See /var/log/ipaserver-install.log for more information
Sending SIGTERM to remaining processes...
Sending SIGKILL to remaining processes...
All filesystems, swaps, loop devices, MD devices and DM devices detached.
Exiting container.

Also I don’t know should I changed my host’s /etc/host file and what should I do put to it?