signal

entrypoint.sh

@@ -18,4 +18,27 @@ echo $interface up
 PATH=$PATH:/ iptables -V
 #trap 等信号来了down
 
-sleep infinity
+pid=0
+
+run_stop() {
+  signalCode=$1
+  if [ -n "$DOWN_SCRIPT" ]; then
+    eval "$DOWN_SCRIPT"
+  fi
+  if [ $pid -ne 0 ]; then
+    kill "-$signalCode" "$pid"
+    wait "$pid"
+  fi
+  exit $((128 + signalCode));
+}
+
+trap 'kill ${!}; run_stop 2' SIGTERM
+trap 'kill ${!}; run_stop 15' SIGINT
+
+sleep infinity &
+pid="$!"
+
+# wait forever
+wait "$pid"
+pid=0
+run_stop 1