diff --git a/Dockerfile_jupyterhub b/Dockerfile_jupyterhub
index 91503ef2f9ec944a0d6ce175eb7bc905a4e7461a..799f0b85fef06d9f22e22c86d2b42b415cc33695 100644
--- a/Dockerfile_jupyterhub
+++ b/Dockerfile_jupyterhub
@@ -17,6 +17,6 @@ ENV ENV_NAME ${env_name}
 # setting up
 WORKDIR /notebooks
 RUN useradd -m beyond
-chown -R beyond:beyond /notebooks
+RUN chown -R beyond:beyond /notebooks
 USER beyond
 CMD /opt/conda/envs/${ENV_NAME}/bin/jupyterhub-singleuser --allow-root --debug