Fix layers, destroy container on build cleanup

apk/vmmgr

@@ -1 +1 @@
-Subproject commit 171aa760438326240ece7f034ad5b39a89a4fa74
+Subproject commit 7591cf2d477c9d97c96e13ee276da0bc0cf2a47e

build/usr/lib/python3.6/lxcbuild/builder.py

@@ -92,7 +92,7 @@ class Builder:
         layer_path = self.get_layer_path(name)
         if not os.path.exists(layer_path):
             raise ImageNotFoundError(layer_path)
-        self.image.conf['layers'].insert(-1, name)
+        self.image.conf['layers'].insert(1, name)
 
     def fix_layer(self, cmd):
         layers = [self.get_layer_path(layer) for layer in self.image.conf['layers']]
@@ -129,6 +129,7 @@ class Builder:
 
     def clean(self):
         shutil.rmtree(self.image.path)
+        lxcmgr.destroy_container(self.image.name)
 
 def unpack_http_archive(src, dst):
         xf = 'xzf'