Running Proxy with host UID and GUID

Fixes #2

app/entrypoint.sh

@@ -0,0 +1,15 @@
+#!/bin/sh
+set -e
+
+user="$(id -u)"
+echo "#############################################"
+echo "# start: '$SERVICE_NAME'"
+echo "# with UserID:$UID, GroupID:$GID"
+echo "#############################################"
+
+if [ "$user" = '0' ]; then
+	[ -d "/home/$SERVICE_NAME" ] && chown -R $SERVICE_NAME:$SERVICE_NAME /home/$SERVICE_NAME || true
+    exec gosu $SERVICE_NAME "$@"
+else
+    exec "$@"
+fi