access denied

[MrGloriousFast]

tried running it the way the readme states. got this error:

pi@raspberrypi:~ $ sudo docker pull docker.nanonets.com/pi_training
Using default tag: latest
Error response from daemon: pull access denied for docker.nanonets.com/pi_training, repository does not exist or may require 'docker login': denied: requested access to the resource is denied

docker version:

pi@raspberrypi:~ $ sudo docker --version
Docker version 20.10.6, build 370c289