Update core/testcontainers/core/container.py

Author: Tranquility2

core/testcontainers/core/container.py

@@ -58,6 +58,7 @@ def __init__(
     def with_env(self, key: str, value: str) -> Self:
         self.env[key] = value
         return self
+
     def with_env_file(self, env_file: Union[str, PathLike]) -> Self:
         env_values = dotenv_values(env_file)
         for key, value in env_values.items():