diff --git a/ufw-docker b/ufw-docker
index 6e7f57d..6852280 100755
--- a/ufw-docker
+++ b/ufw-docker
@@ -109,7 +109,7 @@ function ufw-docker--service() {
 
             service_port="${2:-}"
 
-            die "ufw-docker--service-${service_action}" "${service_name}" "${service_port}"
+            "ufw-docker--service-${service_action}" "${service_name}" "${service_port}"
             ;;
         *)
             ufw-docker--help
@@ -117,6 +117,15 @@ function ufw-docker--service() {
     esac
 }
 
+ufw_docker_agent=ufw-docker-agent
+ufw_docker_agent_image="${ufw_docker_agent_image:-chaifeng/${ufw_docker_agent}:181003}"
+
+function ufw-docker--service-allow() {
+    service_name="$1"
+    service_port="$2"
+
+}
+
 function ufw-docker--install() {
 	if ! grep "^# BEGIN UFW AND DOCKER\$" /etc/ufw/after.rules &>/dev/null; then
 		err "Back up /etc/ufw/after.rules"