diff --git a/jupyter-restricted-download/Dockerfile b/jupyter-restricted-download/Dockerfile
index 8cb236ea..b9912bef 100644
--- a/jupyter-restricted-download/Dockerfile
+++ b/jupyter-restricted-download/Dockerfile
@@ -54,13 +54,10 @@ RUN jupyter labextension disable @jupyterlab/docmanager-extension:download \
     && jupyter labextension disable @jupyterlab/filebrowser-extension:download
 
 RUN pip install pandas numpy seaborn scipy matplotlib pyNetLogo SALib boto3 awscli --upgrade
-
-# RUN pip install PyYAML==5.3.1 --upgrade
 RUN pip install gen3==4.18.0 --upgrade
-
 RUN pip install jupyter --upgrade
-
 RUN pip uninstall nbconvert --yes
+
 # Create a non-root user for Jupyter without copying /bin or /bin/bash
 ARG NB_USER=jovyan
 ARG NB_UID=1000
@@ -69,13 +66,20 @@ RUN useradd -m -s /bin/bash -N -u $NB_UID $NB_USER && \
     chmod -R u+rwx /home/$NB_USER && \
     mkdir -p /home/$NB_USER/pd
 
+# Configure environment
+ENV CONDA_DIR=/opt/conda \
+    PATH=/usr/local/bin:$PATH \
+    SHELL=/bin/bash \
+    NB_USER=jovyan \
+    NB_UID=1000 \
+    HOME=/home/$NB_USER \
+    LC_ALL=en_US.UTF-8 \
+    LANG=en_US.UTF-8 \
+    LANGUAGE=en_US.UTF-8
+
 # Expose port 8888 for JupyterLab
 EXPOSE 8888
 
-ARG COVID_TOOLS_BRANCH=master
-ADD --chown=$NB_USER:users https://raw.githubusercontent.com/uc-cdis/covid19-tools/$COVID_TOOLS_BRANCH/covid19-notebooks/welcome.html /home/$NB_USER/
-RUN touch /home/$NB_USER/welcome.html
-
 # Add local files as late as possible to avoid cache busting
 COPY start.sh /usr/local/bin/
 COPY start-notebook.sh /usr/local/bin/