title: launch a CAT command unix into Dockerfile
body: <p>I would like to launch this vagrant command cat(run perfectly!) to provisionning my container with a Dockerfile :</p>
  
  <pre><code># Configure Virtualenvwrapper.
  RUN cat &lt;&lt;EOF &gt;&gt; /home/docker/.bashrc
  # Virtualenvwrapper configuration.
  export WORKON_HOME=\$HOME/.virtualenvs
  export PROJECT_HOME=\$HOME/Devel
  source /usr/local/bin/virtualenvwrapper.sh
  EOF
  </code></pre>
  
  <p>But I have this error return when I launch my building image docker :</p>
  
  <pre><code> ---&gt; 40f9ed8e187d
  Removing intermediate container 85f6c8536520
  Step 69 : RUN cat &lt;&lt;EOF &gt;&gt; /home/docker/.bashrc
   ---&gt; Running in dcbb3d441f79
   ---&gt; 78acd9c2e5d5
  Removing intermediate container dcbb3d441f79
  Step 70 : EXPORT
  Unknown instruction: EXPORT
  </code></pre>
  
  <p><strong>What is the trick for run a cat command unix into image with Dockerfile ?</strong></p>