一次最多转换11个镜像！！！！！ json格式如下
{ "hub-mirror": [ "gcr.io/google-samples/microservices-demo/emailservice:v0.3.5", "gcr.io/google-samples/microservices-demo/checkoutservice:v0.3.5", "gcr.io/google-samples/microservices-demo/recommendationservice:v0.3.5", "gcr.io/google-samples/microservices-demo/frontend:v0.3.5", "gcr.io/google-samples/microservices-demo/paymentservice:v0.3.5", "gcr.io/google-samples/microservices-demo/productcatalogservice:v0.3.5", "gcr.io/google-samples/microservices-demo/cartservice:v0.3.5", "gcr.io/google-samples/microservices-demo/loadgenerator:v0.3.5", "gcr.io/google-samples/microservices-demo/currencyservice:v0.3.5", "gcr.io/google-samples/microservices-demo/shippingservice:v0.3.5", "gcr.io/google-samples/microservices-demo/adservice:v0.3.5" ] }