Run in Docker

[beriberikix]

I'm trying to run this in a Docker container, first locally and then deployed to a toy server in the Cloud. You can see my Dockerfile and tracking issue on my fork.

I originally thought it was a Docker for Mac networking issue but ruled it out because netcat over udp works just fine.

I'm a novice when it comes to C/C++ and but more importantly I've never done any UNIX socket programming, so the solution may be obvious. Any ideas?