i cloned the repo and executed the ./start-docker-nix-build-slave script and then followed the guide in the https://github.com/LnL7/nix-docker#building-an-image guide and then in the new environment:
nixops deploy -d test
i get these errors:
... many lines
error: the group 'nixbld' specified in 'build-users-group' does not exist
i've tried this on docker host:
echo "build-users-group =" > /etc/nix/nix.conf'
but it didn't change the error message nor fix it.