diff --git a/Dockerfile b/Dockerfile
index 00f756e..786a43a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM debian:buster
+FROM debian:stable-slim
 
 ARG SQUID_VERSION
 ENV ENV_SQUID_VERSION=$SQUID_VERSION
diff --git a/Dockerfile.arm b/Dockerfile.arm
index 9dbfa7b..6e97889 100644
--- a/Dockerfile.arm
+++ b/Dockerfile.arm
@@ -1,4 +1,4 @@
-FROM debian:buster
+FROM debian:stable-slim
 
 ARG SQUID_VERSION
 ENV ENV_SQUID_VERSION=$SQUID_VERSION
diff --git a/run.sh b/run.sh
index 5016876..fd50f8a 100644
--- a/run.sh
+++ b/run.sh
@@ -1,33 +1,36 @@
 #!/bin/bash
 set -vx
-
 # remove previous pid (if exist) after crash
-rm /var/run/$HOSTNAME.pid
+rm /var/run/squid.pid
 
 if [ $NOAUTO == "yes" ];then
     squid -z -n $HOSTNAME
     squid -N -n $HOSTNAME
 fi
 
+# + 48h
+LIMIT="-cmin +2880"
 
-LIMIT="-cmin +1440"
-FINDTIME=$(find /var/cache/squid/$HOSTNAME/* -maxdepth 0 -type d $LIMIT)
+# le cache contient des repertoires pas utilisés depuis plus de $LIMIT 
+FINDTIME=$(find /var/spool/squid/$HOSTNAME/* -maxdepth 0 -type d $LIMIT | wc -l)
+# Combien de rep en tout
+NOWREP=$(find /var/spool/squid/$HOSTNAME/* -maxdepth 0 -type d | wc -l)
 
 chown -R squid /var/log/squid 
 
 # Not exist or too old
-if [ ! -d "/var/cache/squid/$HOSTNAME" ] || [ ! -z $FINDTIME ];then
+if [ ! -d "/var/spool/squid/$HOSTNAME" ] || [ $FINDTIME == $NOWREP ];then
   squid -z -n $HOSTNAME
-  sleep 1
+  sleep 5
 else
-  touch "/var/cache/squid/$HOSTNAME"
+  touch "/var/spool/squid/$HOSTNAME"
 fi
 
-while test -e /var/run/$HOSTNAME.pid 
+while test -e /var/run/squid.pid 
 do
   echo "cache is generated/checked"	
   sleep 1
-done                	              	
+done      
 
 # Find and remove old useless caches directories (not used after limi valuet). sleep is only used to wait other containers are well started.
 mkdir /tmp/empty