That would be great! Might have to use 

2>/dev/null

 in some of my bash scripts

Feel free to test and PR :)

One other question regarding connecting. We have setup sshd inside the docker image we are using.

Actually the remote session opens port 10022 on the host machine (so it does not collide with the default ssh port)
It actually runs an additional sshd inside the docker, setting its port.
And the clearml-session will ssh directly into the container sshd (port 10022), make sense ?

Is there a way to disable this behaviour, and let the container run isolated from the host?

what do you mean by that ?