change dict pop to dict get for the gazillionth time

Author: svandenhaute

psiflow/execution.py

@@ -231,7 +231,7 @@ def parse_config(yaml_dict: dict):
                 launcher = SimpleLauncher()
                 _container_dict = None
             else:
-                _container_dict = yaml_dict.pop("container", container_dict)
+                _container_dict = yaml_dict.get("container", container_dict)
                 assert _container_dict is not None
                 launcher = ContainerizedLauncher(
                     **_container_dict,