Docker issue when you got an existing machine which configured for a diff account

 Recently, I got a chance to work on an important project as a firefighter for 4 weeks, I got the existing machine and my first issue was related to the docker, here is my learning and details for the fix.

Error -' You are not allowed to use Docker, you must be in the "docker-users" group

I got this error while running the docker, to fix this issue I follow this link 

basically, we need to add the user to the docker-user membership 

Now, after doing that, I got a diff error, which is as below

to fix that, please make sure you do the sign-out, the restart and disconnect option will not work.

I hope that will help others.