diff --git a/all-spark-notebook/Dockerfile b/all-spark-notebook/Dockerfile
index a0ccb5d8..872bdb7a 100644
--- a/all-spark-notebook/Dockerfile
+++ b/all-spark-notebook/Dockerfile
@@ -91,4 +91,5 @@ USER root
 # switching at runtime.
 RUN $CONDA_DIR/envs/python2/bin/python \
     $CONDA_DIR/envs/python2/bin/ipython \
-    kernelspec install-self
\ No newline at end of file
+    kernelspec install-self
+
diff --git a/datascience-notebook/Dockerfile b/datascience-notebook/Dockerfile
index f1af91c2..24fff04a 100644
--- a/datascience-notebook/Dockerfile
+++ b/datascience-notebook/Dockerfile
@@ -96,4 +96,5 @@ USER root
 # switching at runtime.
 RUN $CONDA_DIR/envs/python2/bin/python \
     $CONDA_DIR/envs/python2/bin/ipython \
-    kernelspec install-self
\ No newline at end of file
+    kernelspec install-self
+
diff --git a/minimal-notebook/Dockerfile b/minimal-notebook/Dockerfile
index ce94b021..c6d4ebd8 100644
--- a/minimal-notebook/Dockerfile
+++ b/minimal-notebook/Dockerfile
@@ -22,13 +22,19 @@ RUN apt-get update && apt-get install -yq --no-install-recommends \
     texlive-latex-extra \
     texlive-fonts-extra \
     texlive-fonts-recommended \
-    supervisor \
     sudo \
     && apt-get clean
 
+# Install Tini
+RUN wget --quiet https://github.com/krallin/tini/releases/download/v0.6.0/tini && \
+    echo "d5ed732199c36a1189320e6c4859f0169e950692f451c03e7854243b95f4234b *tini" | sha256sum -c - && \
+    mv tini /usr/local/bin/tini && \
+    chmod +x /usr/local/bin/tini
+
 # Configure environment
 ENV CONDA_DIR /opt/conda
 ENV PATH $CONDA_DIR/bin:$PATH
+ENV SHELL /bin/bash
 ENV NB_USER jovyan
 ENV NB_UID 1000
 
@@ -36,6 +42,7 @@ ENV NB_UID 1000
 RUN mkdir -p $CONDA_DIR && \
     echo export PATH=$CONDA_DIR/bin:'$PATH' > /etc/profile.d/conda.sh && \
     wget --quiet https://repo.continuum.io/miniconda/Miniconda3-3.9.1-Linux-x86_64.sh && \
+    echo "6c6b44acdd0bc4229377ee10d52c8ac6160c336d9cdd669db7371aa9344e1ac3 *Miniconda3-3.9.1-Linux-x86_64.sh" | sha256sum -c - && \
     /bin/bash /Miniconda3-3.9.1-Linux-x86_64.sh -f -b -p $CONDA_DIR && \
     rm Miniconda3-3.9.1-Linux-x86_64.sh && \
     $CONDA_DIR/bin/conda install --yes conda==3.14.1
@@ -57,10 +64,11 @@ RUN useradd -m -s /bin/bash -N -u $NB_UID $NB_USER && \
 
 # Configure container startup
 EXPOSE 8888
-CMD [ "start-notebook.sh" ]
+WORKDIR /home/$NB_USER/work
+ENTRYPOINT ["tini", "--"]
+CMD ["start-notebook.sh"]
 
 # Add local files as late as possible to avoid cache busting
 COPY start-notebook.sh /usr/local/bin/
-COPY notebook.conf /etc/supervisor/conf.d/
 COPY jupyter_notebook_config.py /home/$NB_USER/.jupyter/
 RUN chown -R $NB_USER:users /home/$NB_USER/.jupyter
\ No newline at end of file
diff --git a/minimal-notebook/notebook.conf b/minimal-notebook/notebook.conf
deleted file mode 100644
index a63b3596..00000000
--- a/minimal-notebook/notebook.conf
+++ /dev/null
@@ -1,10 +0,0 @@
-[program:notebook]
-user=jovyan
-umask=0002
-directory=/home/jovyan/work
-command=ipython notebook
-autostart=true
-autorestart=true
-stdout_logfile=/var/log/supervisor/%(program_name)s.log
-redirect_stderr=true
-environment=HOME="/home/jovyan",USER="jovyan",SHELL="/bin/bash"
diff --git a/minimal-notebook/start-notebook.sh b/minimal-notebook/start-notebook.sh
index f385ef32..c9f42972 100755
--- a/minimal-notebook/start-notebook.sh
+++ b/minimal-notebook/start-notebook.sh
@@ -11,5 +11,6 @@ if [ ! -z "$GRANT_SUDO" ]; then
     echo "$NB_USER ALL=(ALL) NOPASSWD:ALL" > /etc/sudoers.d/notebook
 fi
 
-# Start supervisord in foreground, PID1
-exec supervisord -n -c /etc/supervisor/supervisord.conf
+# Start the notebook server
+exec su $NB_USER -c "env PATH=$PATH jupyter notebook $@"
+
diff --git a/pyspark-notebook/Dockerfile b/pyspark-notebook/Dockerfile
index 646f9c49..c29dbef4 100644
--- a/pyspark-notebook/Dockerfile
+++ b/pyspark-notebook/Dockerfile
@@ -57,4 +57,5 @@ USER root
 # switching at runtime.
 RUN $CONDA_DIR/envs/python2/bin/python \
     $CONDA_DIR/envs/python2/bin/ipython \
-    kernelspec install-self
\ No newline at end of file
+    kernelspec install-self
+
diff --git a/scipy-notebook/Dockerfile b/scipy-notebook/Dockerfile
index df801ad3..c177105f 100644
--- a/scipy-notebook/Dockerfile
+++ b/scipy-notebook/Dockerfile
@@ -52,3 +52,4 @@ USER root
 RUN $CONDA_DIR/envs/python2/bin/python \
     $CONDA_DIR/envs/python2/bin/ipython \
     kernelspec install-self
+