kubernetes-build Dockerfile auto build kubernetes组件 kube-apiserver-amd kube-controller-manager-amd64 kube-proxy-amd64 kube-scheduler-amd64 pause-amd64 k8s-dns-sidecar-amd64 k8s-dns-dnsmasq-nanny-amd64 flannel:v0.9.1-amd64 etcd-amd64