diff --git a/scripts/_common.sh b/scripts/_common.sh
index 494a560..ec9aa5c 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -9,6 +9,20 @@ pkg_dependencies_virtualisation="qemu-utils e2fsprogs"
 # PERSONAL HELPERS
 #=================================================
 
+systemd-detect-virt  -c -q
+if [ $? ] 
+then #system is inside a container, 
+    export VIRTUALISATION=true
+    virtualisation=true
+    # comment systemd isolation to allow mount disk
+    virt_protection="#"
+else
+    virtualisation=false
+    export VIRTUALISATION=false
+    # uncomment systemd isolation
+    virt_protection=""
+fi
+    
 
 GARAGE_VERSION="0.8.2"
 
diff --git a/scripts/config b/scripts/config
index dd482d3..a39681c 100644
--- a/scripts/config
+++ b/scripts/config
@@ -16,7 +16,6 @@ ynh_abort_if_errors
 
 final_path=$(ynh_app_setting_get $app final_path)
 node_id=$(ynh_app_setting_get $app node_id)
-virtualisation=$(ynh_app_setting_get $app virtualisation)
 datadir=$(ynh_app_setting_get $app datadir)
 if [ "$virtualisation" = "true" ] 
 then
diff --git a/scripts/install b/scripts/install
index 2151322..99247b2 100755
--- a/scripts/install
+++ b/scripts/install
@@ -24,25 +24,6 @@ then
 	echo "$bootstrap_peers" | grep -E '[0-9a-f]{64}@((\b25[0-5]|\b2[0-4][0-9]|\b[01]?[0-9][0-9]?)(\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}|([a-zA-Z0-9][a-zA-Z0-9-]{0,61}[a-zA-Z0-9]\.)+[a-zA-Z]{2,}):[0-9]{1,4}' || ynh_die --message="friend server id must have id with the following form : 1799bccfd7411eddcf9ebd316bc1f5287ad12a68094e1c6ac6abde7e6feae1ec@192.168.1.1:1234 or  1799bccfd7411eddcf9ebd316bc1f5287ad12a68094e1c6ac6abde7e6feae1ec@example.tld:1234"
 fi
 
-#=================================================
-# LOOKING FOR VIRTUALISATION
-#=================================================
-ynh_script_progression --message="Checking virtualisation availability…" --weight=1
-
-if [  "$(which modprobe)" = ""  ] 
-then
-	virtualisation=false
-	export VIRTUALISATION=false
-	# uncomment systemd isolation
-	virt_protection=""
-else
-    export VIRTUALISATION=true
-	virtualisation=true
-	# comment systemd isolation to allow mount disk
-	virt_protection="#"
-fi
-ynh_app_setting_set --app=$app --key=virtualisation --value=$virtualisation
-
 #=================================================
 # STORE SETTINGS FROM MANIFEST
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index 663ee9c..bd32ef9 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -9,7 +9,6 @@
 source _common.sh
 source /usr/share/yunohost/helpers
 
-
 if [ "$virtualisation" = "true" ] ;
 then
 	virt_protection=""