Hi, I did setup my ODK Build server on DO.
After solving all the dependencies, my application server started running and listening to port 9393.
Even after successful running, when i am trying to connect to that port and access the ODK build page, it is showing unreachable address.
First, test that you can access the server locally on port 9393 (maybe using telnet 127.0.0.1 9393). Next, try running shotgun by binding to all IPs shotgun --host 0.0.0.0. Assuming that works, then try binding to your external IP (shotgun --host 12.34.56).