diff --git a/Dockerfile b/Dockerfile
index 0fb046a..4052084 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,8 +4,8 @@
 FROM ubuntu:14.10
 MAINTAINER yinheli <me@yinheli.com>
 
-RUN /bin/sed -i.bak 's/archive/cn\.archive/' /etc/apt/sources.list
-RUN rm /bin/sh && ln -s /bin/bash /bin/sh && \
+RUN /bin/sed -i.bak 's/archive/cn\.archive/' /etc/apt/sources.list && \
+    rm /bin/sh && ln -s /bin/bash /bin/sh && \
     apt-get update && apt-get install -y zlib1g-dev lib32z1 lib32ncurses5 && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* && \