Localhost Docker Azuracast

Hello fom Germany,
i’m a newbie with my own VPS server running on Debian 10.12 with plesk 18.0.43.
After installing Docker with the AzuraCast package i don’t see my containers.
I have to add an server with host and port.
i have no idea, can anyone help me, also access is possible to the server.

Greetings, Martin