Cannot complete download Docker image- "unauthorized: authentication required"

Attempting to download Katalon image from docker hub.
I have Docker running and managed to pull other images such as Ubuntu.
In cmd dialog I run “docker pull katalonstudio/katalon”.
Image starts downloading, but toward the end I get a message in the cmd interface “unauthorized: authentication required” and download stops.
Any ideas?

[root@xx ~]# docker pull hello-world
Using default tag: latest
Pulling repository
Error while pulling image: Get authenticationrequired

earlier i have set docker proxy in file /etc/systemd/system/docker.service.d/https-proxy.conf

then i commented this, and sys-reloaded
#sudo systemctl daemon-reload
#sudo systemctl restart docker

then i tried to pull hello-world and i got it.
try with correct username, pswd, proxy address…

sometime docker works with proxy also without proxy :frowning:
I hope this helps!

Please try with:

docker pull katalonstudio/katalon:latest

If the unauthorized message shows again, you need to login or add proxy and try again.

I managed to pull image using the “-q” tag