Proxmox Docker VE unknown host when trying login via SSH

[JL-EU]

Hello
I installed Docker on a Proxmox VE using the Helper-Scripts without issues. An IP address is assigned and I can access the VE when using the IP address. However, I can't access the VE using the hostname of the VE, then I get the error message "unknown host". I have installed VMs on the same Proxmox server and here I never had issues accessing using the hostname. In this example I can ping the IP address 192.168.1.159 while hostname frigate-docker.local gives the message "Unknown host". The settings are the following:

Any help is appreciated, thanks,

[Mellowlynx]

Make sure the host in the host file or in your network DNS to work property.
Else is unknown and can't look up its IP