Command 'tlt' not found

I strictly followed the instruction to install the Pre-requisites, also pretty sure that I can ran docker without the prefix ‘sudo’. When I tried to use the models mentioned in the following tutorial(https://developer.nvidia.com/blog/creating-a-real-time-license-plate-detection-and-recognition-app/), I’ve got stuck at


So, I logged into this forums to see if I can find a solution and I did find a similar one where someone said to run ‘tlt info detectnet_v2 run cat /workspace/openlpr/SPECS_tfrecord.txt’. However, it just thorwn another problem saying that command ‘tlt’ not found.