JOC Cockpit batch installation breaks if joc_install.xml has comments

Current Situation

• If joc_install,xml has a commented <installpath> tag, the batch installation does not starts.
• Following XML line, produces the error, if its deleted the setup work normally.
  • <!-- <installpath>[:choose absolute installation path of JOC:]</installpath> -->

  • ...
        <com.izforge.izpack.panels.TargetPanel id="target">
            <!-- SELECT THE INSTALLATION PATH
                 It must be absolute! -->
    <!--        <installpath>[:choose absolute installation path of JOC:]</installpath>  -->
            <installpath>/appl/js/js-joc-cockpit/script-installation</installpath>
        </com.izforge.izpack.panels.TargetPanel>
        <com.izforge.izpack.panels.UserInputPanel id="jetty">
    ...
    

Desired Behavior

• The JOC Cockpit batch installation should not break if there are comments in the joc_installation.xml

Maintainer Note

• If the <installpath/> is not set then the working directory is the installation directory.
  The setup start-script tries to avoid that the installer can be start without a <installpath/> setting.
  For this the joc_install.xml is provided with
  <installpath>[:choose absolute installation path of JOC:]</installpath>
  where the value is an invalid path.
  The setup start-script is looking for the [:choose with "grep" and stops the installation with a message

  Please edit at first the file: ...
  

  if [:choose is found.
  The setup start-script is only a shell script which don't parse the XML to see possibly comments around
  <installpath>[:choose absolute installation path of JOC:]</installpath>.
  In the case described above, the start-script still finds [:choose
  The effort is disproportionate to the benefit if you want to teach the shell script to parse XMLs.