diff --git a/ci/Dockerfile b/ci/Dockerfile
index 4209b3c..81437f3 100644
--- a/ci/Dockerfile
+++ b/ci/Dockerfile
@@ -4,6 +4,8 @@ RUN conda init zsh && conda init bash
 
 COPY --chown=jovyan:jovyan . /home/jovyan/.kernels
 
+USER ${NB_USER}
+
 WORKDIR ${HOME}/.kernels
 
 RUN chmod +x install-kernels.sh && cd /home/jovyan/.kernels && ./install-kernels.sh environments