Dianne,
We did not put any Docker image on Dockerhub, so you are using an old version that was not created by us.

The version on nitrc does not have this error. Please try again to download it from
http://mri_reface.projects.nitrc.org/mri...
or else contact nitrc support to help with your download issue.

This version will not have that error.

Thanks,
Chris Schwarz