title: creating a default database in mysql using dockerfile
body: <p>Im using this <a href="https://github.com/tutumcloud/tutum-docker-mysql">tutum-docker-mysql</a> dockerfile, to get up and running with a docker image with mysql installed in it,the docker file creates a user with the name root and no password, what i need is to add  something like this to the dockerfile:</p>
  
  <pre><code>RUN mysql -uroot -p""  &amp;&amp;  mysql create database test;
  </code></pre>
  
  <p>So when I build an image from the docker file, the database should already be there. </p>