unable to prepare context: unable to evaluate symlinks in Dockerfile path: lstat /var/lib/snapd/void/Dockerfile: no such file or directory

I installed docker on Ubuntu with snap (snappy?), and then I ran this:

ln -sf /usr/bin/snap /usr/local/bin/docker

when I run docker build I get:

unable to prepare context: unable to evaluate symlinks in Dockerfile path: lstat /var/lib/snapd/void/Dockerfile: no such file or

directory