InformationYou should verify that all the registry certificate files (usually found under /etc/docker/certs.d/<registry-name> directory) are individually owned and group owned by root.
The /etc/docker/certs.d/<registry-name> directory contains Docker registry certificates. These certificate files must be individually owned and group owned by root to ensure that less privileged users are unable to modify the contents of the directory.
SolutionThe following command could be executed:
chown root:root /etc/docker/certs.d/<registry-name>/*
This would set the individual ownership and group ownership for the registry certificate files to root.
By default, the individual ownership and group ownership for registry certificate files is correctly set to root.