Data volume containers are empty after initialization

Using the base Windows Server Core image, I’ve created an image that git clones a directory into a directory on the C drive. I’m wanting to use this image as a data container. Running the create command works but when I attempt to attach to the other container using volumes-from, the resulting container does not have the shared data.

Example of my commands:
docker create -v c:\sites --name sites storeimage
docker run -d volumes-from sites --name app aspnetimage

edit: I’m running this one Windows Server 2016 with all current updates. Docker version running on it is 17.03.1-ee-3