diff --git a/Dockerfile_4 b/Dockerfile_4
index 11ae31d..ab12492 100644
--- a/Dockerfile_4
+++ b/Dockerfile_4
@@ -28,6 +28,6 @@ RUN chmod +x ./zadanie1.py
 RUN chmod +x ./train.py
 RUN chmod +x ./test.py
 
-RUN export GIT_PYTHON_REFRESH=quiet
+CMD GIT_PYTHON_REFRESH=quiet
 RUN dvc pull
 RUN dvc repro
\ No newline at end of file