$ docker compose up -d --build
# ls
$ grpc_cli ls localhost:50051 janken.JankenService
# call
$ grpc_cli call localhost:50051 janken.JankenService.PlayJanken 'hands: 1'
$ grpc_cli call localhost:50051 janken.JankenService.PlayJankenResults ''
$ docker compose up -d --build
# ls
$ grpc_cli ls localhost:50051 janken.JankenService
# call
$ grpc_cli call localhost:50051 janken.JankenService.PlayJanken 'hands: 1'
$ grpc_cli call localhost:50051 janken.JankenService.PlayJankenResults ''