How to determine –privileged in docker?

I have multiple images of docker container

As of now

I have this image that I want to know the --privileged

IP : 192.168.0.XX:3021

Some says I need to run sudo docker run --privileged 192.168.0.XX:3021 on my host.

But this gives me an error like this

enter image description here

Is my cmd syntax is correct to check the --privileged of that 3021 container?

enter image description here

Source: StackOverflow