How to docker push to DigitalOcean private container registry for a Remote User

I have successfully setup the private Docker registry with authentication. However this authentication is only for docker pull command. Doing a docker push command gives me

denied: requested access to the resource is denied
unauthorized: authentication required

I understand the concept of doctl registry login and pushing from my end as admin user. How can i do the same for a remote user without giving the remote user read and write API access token from DO control panel.

by generating and sharing doctl registry docker-config ( from my end) he was able to pull from the DO private registry but push failed with the above msg