I can add an inline comment if you want.

Assuming /bar is a symlink to /foo and we're doing `-v /bar/x`.
`container.Volumes` was still having the `/bar`, so I updated that to the resolved version: `/foo`.

For that, I had to remove the `basefs` part from the resolved version `rootVolPath: hence `newVolPath`. Since a comparison with the baseless `volPath` is necessary in order to know if it should be removed from the Volumes map, I had to remove the reassigning of `volPath`.