fix https://github.com/nextcloud/vm/issues/600

lib.sh

@@ -112,7 +112,7 @@ ENVASIVE=/etc/apache2/mods-available/mod-evasive.load
 APACHE2=/etc/apache2/apache2.conf
 # Full text Search
 [ ! -z "$ES_INSTALL" ] && NCADMIN=$(sudo -u www-data php $NCPATH/occ user:list | awk '{print $3}')
-[ ! -z "$ES_INSTALL" ] && ROREST=$(tr -dc "a-zA-Z0-9@#*=" < /dev/urandom | fold -w "$SHUF" | head -n 1)
+[ ! -z "$ES_INSTALL" ] && ROREST=$(tr -dc "A-Za-z0-9" < /dev/urandom | fold -w "$SHUF" | head -n 1)
 [ ! -z "$ES_INSTALL" ] && DOCKER_INS=$(dpkg -l | grep ^ii | awk '{print $2}' | grep docker)
 [ ! -z "$ES_INSTALL" ] && nc_rores6x="ark74/nc_rores6.x:1.6.23_es6.3.2"
 [ ! -z "$ES_INSTALL" ] && rores6x_name="es6.3.2-rores_1.6.23"