don’t worry, these two lines are expected.
if you care about root user inside docker container - fill free to remap container root user to unprivileged user on host system via User Namespaces.
for technical details - [url]dockerd | Docker Documentation
for implementation details - [url]https://integratedcode.us/2015/10/13/user-namespaces-have-arrived-in-docker/[/url]