Cleanup exited containers before build.
Cleanup exited containers before build.

So we don't run out of space

kubernetes/minikube,warmchang/minikube,r2d4/minikube,warmchang/minikube,dlorenc/minikube,dlorenc/minikube,dlorenc/minikube,kubernetes/minikube,dlorenc/minikube,cu12/minikube,dlorenc/minikube,dlorenc/minikube,dalehamel/minikube,aaron-prindle/minikube,kubernetes/minikube,r2d4/minikube,dims/minikube,kubernetes/minikube,aaron-prindle/minikube,warmchang/minikube,kubernetes/minikube,warmchang/minikube,cu12/minikube,kubernetes/minikube,dims/minikube,dalehamel/minikube,dalehamel/minikube,dlorenc/minikube,aaron-prindle/minikube,warmchang/minikube,warmchang/minikube,r2d4/minikube,kubernetes/minikube,warmchang/minikube,cu12/minikube,dlorenc/minikube,dims/minikube