How to connect domain server to vircadia? except localhost

sorry if my english is not correct

I use docker and ubuntu 22. I don’t understand how to connect the server domain to vircadia. I have copied the token at to the server domain. like the picture below. then I created a domain ID

then appears at
but there is something strange, the address is not there. edited but not saved

I tried it on Vircadia and it didn’t work in explore → “kampus” it didn’t work

what am I doing wrong?