fix:pre install clear old files

debbuild/22.04/DEBIAN/preinst

@@ -1,5 +1,10 @@
 # !/bin/sh
 
+FERootDir=/usr/local/omc/htdocs/front
 # apt-get install zip
+# clear front-end old hash js files
+rm -rf ${FERootDir}/assets
+rm -rf ${FERootDir}/js
+rm -rf index.*.js
 
 

debbuild/DEBIAN/preinst

@@ -1,5 +1,8 @@
 # !/bin/sh
 
+FERootDir=/usr/local/omc/htdocs/front
 # apt-get install zip
-
-
+# clear front-end old hash js files
+rm -rf ${FERootDir}/assets
+rm -rf ${FERootDir}/js
+rm -rf index.*.js