force install when target dir is empty (and when download is no update)

deploy_app.sh

@@ -179,6 +179,11 @@ function deploy(){
     header "Switch into install dir ${installdir} ..."
     test -d "${installdir}" || mkdir -p "${installdir}"
     cd ${installdir} || exit 2
+    ls -1 * >/dev/null 2>&1
+    if [ $? -ne 0 ]; then
+        echo "INFO: target directory is empty."
+        isupdate=$isupdate+1
+    fi
 
 
     # ----------------------------------------------------------------------