allow access from 0.0.0.0

src/server/services/express/express.service.ts

             connectionHandler: (socket) => { this.connectionCount += 1 },
         })
         rpcServer.attach(httpServer)
-        rpcServer.listen(PORT)
+        httpServer.listen(PORT, '0.0.0.0')
 
         console.log("Server up on", PORT)
     };