I wasted roughly an hour on this two separate times now.  Basically, my docker volume mount would stop showing files.

I dug through endless git hub pages and error reports, tried making the docker NAT private and everything… but the problem ended up being that I went home from work and was using my VPN!

So, before spending too much time on the complicated solutions you find online; just start by disabling your VPN if you have one running and see if that helps first.