diff --git a/webkit/Dockerfile b/webkit/Dockerfile
index 1cafc1c..8f3b1fe 100644
--- a/webkit/Dockerfile
+++ b/webkit/Dockerfile
@@ -5,6 +5,8 @@
 FROM ubuntu:14.04
 MAINTAINER kev
 
+RUN echo "Asia/Shanghai" > /etc/timezone
+RUN ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
 RUN apt-get update && apt-get install -y supervisor haproxy libfontconfig1 libfreetype6 monit nginx
 RUN mkdir -p /data/ /webkit/includes/
 
diff --git a/webkit/etc/monit/conf.d/cleanup.cfg b/webkit/etc/monit/conf.d/cleanup.cfg
new file mode 100644
index 0000000..bfe051c
--- /dev/null
+++ b/webkit/etc/monit/conf.d/cleanup.cfg
@@ -0,0 +1,2 @@
+check program cleanup with path "find /data -type f -cmin +60 -delete"
+    every 5 cycles