fix update container

auto_upgrade_container.sh

@@ -9,7 +9,7 @@ do
 	do
 		for snapshot in "before-install" "after-install"
 		do
-			update_image $debian_version $ynh_version $snapshot
+			update_container $debian_version $ynh_version $snapshot
 		done
 	done
 done
@@ -20,7 +20,7 @@ do
 	do
 		for snapshot in "before-install" "after-install"
 		do
-			update_image $debian_version $ynh_version $snapshot
+			update_container $debian_version $ynh_version $snapshot
 		done
 	done
 done

prepare.sh

@@ -12,7 +12,7 @@ trap "exit $SYSTEM_FAILURE_EXIT_CODE" ERR
 start_container () {
 	if ! lxc info "$CONTAINER_IMAGE" >/dev/null 2>/dev/null ; then
 		warn 'Container not found, copying it from the prebuilt image'
-		if ! lxc image info "$BASE_IMAGE" &>/dev/null
+		if ! lxc info "$BASE_IMAGE" &>/dev/null || ! lxc info "$BASE_IMAGE" | grep -q "$SNAPSHOT_NAME"
 		then
 			error "$BASE_IMAGE not found, please rebuild with rebuild_all.sh"
 			# Inform GitLab Runner that this is a system failure, so it

rebuild_all.sh

@@ -30,7 +30,7 @@ do
 
 			lxc delete -f "yunohost-$debian_version-$ynh_version-$snapshot-tmp"
 
-			update_image $debian_version $ynh_version $snapshot
+			update_container $debian_version $ynh_version $snapshot
 		done
 	done
 done

utils.sh

@@ -190,20 +190,20 @@ rebuild_base_containers()
 	lxc stop "$base_image_to_rebuild"
 }
 
-update_image() {
+update_container() {
 	local debian_version=$1
 	local ynh_version=$2
 	local snapshot=$3
 	local image_to_update="yunohost-$debian_version-$ynh_version-$snapshot"
 
-	if ! lxc image info "$image_to_update" &>/dev/null
+	if ! lxc info "$image_to_update" &>/dev/null
 	then
 		error "Unable to upgrade image $image_to_update"
 		return
 	fi
 
 	# Start and run upgrade
-	lxc launch "$image_to_update" "$image_to_update" -c security.nesting=true
+	lxc restore "$image_to_update" "$snapshot"
 	
 	wait_container "$image_to_update"