title: "python setup.py install" does not work from Dockerfile but i can go in the container and do the same..any pointers?
body: <p>I am getting this error while doing <code>sudo docker build .</code></p>
  
  <pre><code>&gt; (3:58:02 PM) njain: tep 28 : RUN  python /tmp/setup.py install &amp;&amp; 
  &gt; python /tmp/buzz/scripts/setuprabbit.py  ---&gt; Running in e7afcbda3c75
  &gt; Traceback (most recent call last):   File "/tmp/setup.py", line 7, in
  &gt; &lt;module&gt;
  &gt;     long_description=open('README.md', 'r').read(), IOError: [Errno 2] No such file or directory: 'README.md' 2014/10/15 15:40:14 The command
  &gt; [/bin/sh -c python /tmp/setup.py install &amp;&amp;  python
  &gt; /tmp/buzz/scripts/setuprabbit.py] returned a non-zero code
  </code></pre>
  
  <p>My Dockerfile looks like this:</p>
  
  <pre><code>ADD buzz /tmp/
  # DOCKER-VERSION 0.3.4
  #bunch of installs
  RUN cd /tmp/
  RUN  python /tmp/setup.py install &amp;&amp;  python /tmp/buzz/scripts/setuprabbit.py
  </code></pre>
  
  <p>When I go in the container (interactive shell and CD to /tmp/) I am able to to do <code>python setup.py install</code> without any issue.</p>