title: Unable to run docker image - no main manifest attribute, in app.jar
body: <p>Unable to run a docker image built. When I run with the command</p>
  
  <pre><code>docker run -p 8080:8080 -t {image prefix name}/{image name}
  </code></pre>
  
  <p>I get a message <code>"no main manifest attribute, in app.jar"</code></p>
  
  <p>Using docker-maven-plugin and tried maven-assembly-plugin with main class called out explicitly. </p>
  
  <p><code>docker version Boot2Docker 1.7.0</code></p>