diff --git a/Dockerfile b/Dockerfile
index 177b8c0258c29f77f7dd74509fc2f54ee28ff690..7c3841f0cc87598aec73863a3eef8d3acc7710b5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -16,6 +16,7 @@ RUN npm run build
 RUN DATABASE_URL=postgres://x/x \
     SECRET_KEY=x \
     ALLOWED_HOSTS=x \
+    CHOBOTNICE_RV_GID=x \
     python manage.py collectstatic --noinput --settings=rybicka.settings.prod
 
 RUN bash -c "adduser --disabled-login --quiet --gecos app app &&  \