title: Jenkins Ant and dynamic build.properties files
body: <p>I have a single code based being used to build an application for multiple platforms.</p>
  
  <p>Locally I have setup a main build-env.properties file, and a series of additional *.properties files that I use to switch settings for the different platforms I am publishing to.</p>
  
  <p>Doing my build on the command line I simply use the command:</p>
  
  <pre><code>ant build -propertyfile dev-build.properties
  </code></pre>
  
  <p>How can I do this in Jenkins? </p>
  
  <p>I currently use the "Invoke Ant" Build Step with the target set to build, but am at a loss for how to specify the secondary propertyfile?</p>