How to install service-discover-server on Ubuntu 22.04

Hello, I'm new here 😊 

I'm trying to follow the installation instructions, but I can't even install the service-discover-agent package.

# apt install service-discover-server
Reading package lists... Finished
Building a dependency tree... Done
Reading state information... Ready
E: The package service-discover-server is not found.

Ubuntu 22.04is  installed using Proxmox CT template.

Any help?