diff --git a/docker/Dockerfile b/docker/Dockerfile
index 811596b..9a729ff 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -2,19 +2,22 @@ FROM ubuntu:latest
 
 MAINTAINER Sah Lee <contact@leesah.name>
 
+ENV BASEDIR /
+
 # Set up building environment
 RUN apt-get update
 RUN apt-get install -y git-core python python-setuptools
 
 # Get the latest code, build and install
-RUN git clone https://github.com/shadowsocks/shadowsocks.git /tmp
-WORKDIR /tmp/shadowsocks
+RUN git clone https://github.com/shadowsocks/shadowsocks.git $BASEDIR
+WORKDIR $BASEDIR/shadowsocks
+RUN pwd
 RUN python setup.py build
 RUN python setup.py install
 
 # Tear down building environment and delete git repository
 RUN apt-get --purge autoremove -y git-core python python-setuptools
-RUN rm -rf /tmp/shadowsocks
+RUN rm -rf $BASEDIR/shadowsocks
 
 # Config file can be in a separated container
 ENV CONF /etc/shadowsocks.json