reproduce steps:
- install Docker on laptop (not devserver), can use personal account or not login
- make dock: this will build image, server and client binary
- at the end of "make dock", it starts and login the docker container, run "make jmtest-server" to start server
- run "docker ps" to find the running docker container id
- run "docker exec -it [container id] /bin/bash"
- run "make jmtest-client"