Isaac SDK Object Detection docker error: chmod: cannot access '/opt/ngccli/ngc'

When trying to follow this example:

https://docs.nvidia.com/isaac/packages/detect_net/doc/detect_net.html

this docker command almost runs:
docker run --runtime=nvidia -it -v /home/lx/tlt-experiments:/workspace/tlt-experiments -p 8888:8888 nvcr.io/nvidia/tlt-streamanalytics:v2.0_dp_py2

but at the end there is this message:
chmod: cannot access ‘/opt/ngccli/ngc’: No such file or directory

I saw a forum posting where someone suggested running TAO examples, but I don’t know how to do that. I tried running this:
docker run --runtime=nvidia -it -v /home/lx/tlt-experiments:/workspace/tlt-experiments -p 8888:8888 nvcr.io/nvidia/tao/tao-toolkit:4.0.0-tf1.15.5

that command runs but then there is no “examples” folder in the docker.

What do I need to follow the exact steps shown in the Isaac SDK documentation for training a new model ?