I have set a BDS server using this docker image: https://github.com/itzg/docker-minecraft-bedrock-server

The game works well but there are 2 issues after you added it in the server tab:

1, the entry in the Friend tab disappears if you set the server name in the Server tab to the same name with the one you set in server.properties. Otherwise both entries are shown.

2, In the server tab, it says "Locating server" forever and the ping always shows a red dot. When you connect from a different lan, it displays correctly with the ping number.