How to setup wireshark in a docker container?

edit

Not sure how your interfacing is setup. I would expect an ethernet pair connecting your container to the docker0 bridge. That would not allow you to see the host OS interfaces.

My container setup is as below:

1. I've pulled the Ubuntu 18 image and installed Wireshark, xrdp on it.
2. After starting the container and connecting it through RDP (Remmina), I can see all the interfaces in the wireshark. (when I start the container with privileged mode. Without this flag wireshark does not show any interfaces). So I want to restrict the wireshark from using the host os interfaces.

I have not done any setup for interfaces

I doubt you see all interfaces, unless you deploy with --net=host

What do you want to capture or where to capture from? You exclude host interfaces, but then you can only capture traffic that reaches your container or originates in it? What do you want to do?