参考:
https://helm.sh/docs/intro/using_helm/

国内添加阿里云的源:

helm repo add stable http://mirror.azure.cn/kubernetes/charts/
helm repo add incubator http://mirror.azure.cn/kubernetes/charts-incubator/

helm repo add apphub https://apphub.aliyuncs.com
helm search nginx-ingress
helm install nginx-ingress apphub/nginx-ingress

pull

helm pull apphub/nginx-ingress