diff --git a/Dockerfile b/Dockerfile
index 017da10..f9b57c0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,10 +1,15 @@
 FROM jupyter/base-notebook
 
 COPY requirements.txt .
+COPY run_voila .
 
 RUN python3 -m pip install --user --no-cache-dir -r requirements.txt
-COPY notebooks .    
-COPY run_voila .
+
+USER root
+ENV PYTHONPATH "/home/jovyan/work/"
+USER $NB_USER
+
+COPY notebooks work    
 
 EXPOSE 8866
 #CMD ["jupyter-lab","--ip=0.0.0.0","--no-browser","--allow-root"]
diff --git a/requirements.txt b/requirements.txt
index a3ed803..70742b4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,6 @@
 pythreejs
 pandas
 voila
+voila-gridstack
 ipywidgets
 termcolor
diff --git a/run_voila b/run_voila
index c262741..8ad8538 100755
--- a/run_voila
+++ b/run_voila
@@ -1,5 +1,7 @@
-python3 -m voila \
+python3 -m voila work \
 	--Voila.ip='0.0.0.0' \
 	--enable_nbextensions=True \
 	--autoreload=True \
 	--no-browser \
+	--MappingKernelManager.cull_interval=60 \
+	--MappingKernelManager.cull_idle_timeout=120