fix: 升级时前端config.js覆盖问题

pkg/deb/DEBIAN/postinst

@@ -16,6 +16,7 @@ if [ ! -f $RootDir/omc.conf ]; then
     cp $RootDir/default/omc.conf $RootDir/omc.conf
     cp $RootDir/default/omc.yaml $RootDir/omc.yaml
     cp $RootDir/default/sshsvc.yaml $RootDir/sshsvc.yaml
+    cp $RootDir/web/default/config.js $RootDir/web/config.js
 
     # read environment parameter and to do
     if [ -n "$M_PARAM" ] && [ -n "$C_PARAM" ]; then