go install github.com/rodaine/grpc-chat

$ grpc-chat --help
Usage of grpc-chat:
  -h string
      the chat server's host (default "0.0.0.0:6262")
  -n string
      the username for the client
  -p string
      the chat server's password
  -s run as the server
  -v enable debug logging

grpc-chat -s -p "super-secret"

grpc-chat -h "chat.example.com:6262" -p "super-secret" -n "Rodaine"

docker run --rm \
  -p 6262:6262 \
  rodaine/grpc-chat \
  -s -p "super-secret"

docker run --rm -i \
  rodaine/grpc-chat \
  -h "chat.example.com" \
  -p "super-secret" \
  -n "Rodaine"