public void CreatePrivateEndpoints(Manifest cartridge)
        {
            if (cartridge == null)
            {
                throw new ArgumentNullException("cartridge");
            }

            if (cartridge.Endpoints == null || cartridge.Endpoints.Count == 0)
            {
                return;
            }

            foreach (Endpoint endpoint in cartridge.Endpoints)
            {
                string privateIp = "0.0.0.0";
                container.AddEnvVar(endpoint.PrivateIpName, privateIp);

                string port = container.ReadEnvVar("PRISON_PORT");

                if (string.IsNullOrWhiteSpace(port))
                {
                    Logger.Error("No prison port available for gear {0}", this.container.Uuid);
                    throw new Exception(string.Format("No prison port available for gear {0}", this.container.Uuid));
                }

                container.AddEnvVar(endpoint.PrivatePortName, port);

                //if (!string.IsNullOrWhiteSpace(endpoint.WebsocketPortName) && !string.IsNullOrWhiteSpace(endpoint.WebsocketPort))
                //{
                //    string websocketPort = endpoint.WebsocketPort == "0" ? Network.GrabEphemeralPort().ToString() : endpoint.WebsocketPort;
                //    container.AddEnvVar(endpoint.WebsocketPortName, websocketPort);
                //}
            }
        }