title: Can I install a file using Izpack 5 without it being part of the install.jar built by izpack
body: <p>My installation widget.zip zipfile contains the following:</p>
  
  <ul>
  <li>32bitJava</li>
  <li>install.jar</li>
  <li>widgetinstaller.exe</li>
  <li>widgetinstaller.ini</li>
  <li>widgetinstaller.ico</li>
  </ul>
  
  <p>To summarize:</p>
  
  <ul>
  <li>32bitJava is a 32bit JRE downloaded from Oracle</li>
  <li>install.jar is the installer created by Izpack</li>
  <li>widgetinstaller.* are created by winrun4j providing an exe wrapper for the installer.</li>
  </ul>
  
  <p>So with this setup I can install my application without user having to have a java runtime already installed. </p>
  
  <p><strong>However</strong> once installed the actual application also needs a java runtime to actually run. So at the moment a copy of 32bitJava is included as part of the izpack install, i.e it exists in install.jar and is installed at installation time.</p>
  
  <p>But this means I have two copies of the JVM, and because the 32bitJava is larger than my actual application makes my download much too large.</p>
  
  <p>So how can I copy the 32bitJava folder into the installation during/after installation instead of having to include it in install.jar ?</p>