Update custom-entrypoint.sh

custom-entrypoint.sh

@@ -48,6 +48,7 @@ exec turnserver \
 #     --listening-ip=0.0.0.0 \
      --listening-port=7860 \
      --tls-listening-port=5349 \
+     --external-ip=8.tcp.ngrok.io:15174 \
 #     --cert=/etc/turn/certs/turn_server_cert.pem \
 #     --pkey=/etc/turn/certs/turn_server_pkey.pem \
      --user=myuser:mypassword \