Minikube不再作为cask可用.

Minikube is no longer available as a cask.

更改命令

brew cask install minikube

到

brew install minikube

或使用

curl -LO https://storage.googleapis.com/minikube/releases/latest/minikube-darwin-amd64 \
 && sudo install minikube-darwin-amd64 /usr/local/bin/minikube