skip container if dir does not exist

update.py

@@ -87,6 +87,9 @@ class Container:
 
     def _pull_images(self) -> None:
         logging.info('  pulling images')
+        if not self._work_dir.is_dir():
+            print(f"Skipping {self._name}, {self._work_dir} does not exist")
+            return
         call(['docker-compose', 'pull', '--ignore-pull-failures', '--quiet'],
                 cwd=self._work_dir)