Docker: Error response from daemon: unauthorized: authentication required

I attended the course Fundamentals of Deep Learning from nvidia DLI and got the certificate.
They provide a docker image: DLI Deep Learning Fundamentals Course - Base Environment | NVIDIA NGC
I really would like to use the Docker image but I cannot even download it!

docker run -d \
  --runtime=nvidia \
  -p 8888:8888 \
  -v $PWD:/dli/task/mywork \
  nvcr.io/nvidia/dli-dl-fundamentals:v0.0.1

docker: Error response from daemon: unauthorized: authentication required.

Does it need a password? How am I supposed to know the password it has not been mentioned during the course!