Add Install4J uninstall previous VCell version during update

Author: vcfrmgit

docker/build/installers/VCell.install4j

@@ -451,6 +451,15 @@ return console.askOkCancel(message, true);
           </screen>
           <screen id="8" beanClass="com.install4j.runtime.beans.screens.InstallationScreen" rollbackBarrier="true">
             <actions>
+              <action id="3084" beanClass="com.install4j.runtime.beans.actions.UninstallPreviousAction" actionElevationType="none" rollbackBarrierExitCode="0">
+                <serializedBean>
+                  <property name="installationDirectory">
+                    <object class="java.io.File">
+                      <string>${installer:sys.installationDir}</string>
+                    </object>
+                  </property>
+                </serializedBean>
+              </action>
               <action id="9" beanClass="com.install4j.runtime.beans.actions.InstallFilesAction" actionElevationType="elevated" failureStrategy="askRetryQuit" errorMessage="${i18n:FileCorrupted}" />
               <action id="2226" beanClass="com.install4j.runtime.beans.actions.net.DownloadFileAction" enabled="false" actionElevationType="elevated">
                 <serializedBean>