Isaac Sim ML Training

I did docker pull, and followed the instruction.
./ has been created by docker run -u $(id -u) -v $PWD:/workspace -s

All good to this point. And I clicked the URL at the end of the output on my terminal. http://localhost:8888/notebooks/object_detection_from_sim.ipynb?token=object-detection-from-sim

But it tells that " This site can’t be reached localhost refused to connect."

Please help me how to resolve this issue.

Here is the output of the terminal:

We will need your ROOT password to enable access to your display from inside Docker

access control disabled, clients can connect from any host
Starting tutorial use Ctrl-C to stop.
Authenticating with existing credentials…
WARNING! Your password will be stored unencrypted in /home/dave/.docker/config.json.
Configure a credential helper to remove this warning. See

Login Succeeded
Default 3D models were copied to user space

Press Ctrl-C twice to exit