Fix minikube.iso target when not running inside docker.
Fix minikube.iso target when not running inside docker.

Fixes: d92f42a6e459 ("fix the minikube.iso make target")
Signed-off-by: Francis Laniel <1493dd5457177a02e7616fdf81fd4bc3e79dbd48@linux.microsoft.com>

kubernetes/minikube,kubernetes/minikube,kubernetes/minikube,kubernetes/minikube,kubernetes/minikube,kubernetes/minikube,kubernetes/minikube