docker build -t helloworld-grpc .
docker tag helloworld-grpc hello2pariskhit/helloworld-grpc
docker push hello2pariskhit/helloworld-grpc
kubectl apply -f ./kubernetes/grpc-sample.yaml
grpcurl grpc.example.com:443 list
grpc.reflection.v1alpha.ServerReflection
helloworld.helloworld