diff --git a/Dockerfile b/Dockerfile
index 2d321fd..a21f0f3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,18 +1,17 @@
-FROM debian:stretch
-MAINTAINER none
+FROM debian:buster
 
 RUN \
     apt-get update \
-    && apt-get install --yes python git python-pip libssl-dev libbz2-dev \
-		&& apt-get clean \
-		&& rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* \
-        && pip install zeroc-ice
+    && apt-get install --yes python3 git python3-pip libssl-dev libbz2-dev \
+    && apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* \
+    && pip3 install --no-cache-dir zeroc-ice \
+    && useradd --system --no-create-home -U mumo
 
-ADD bin/start.sh /tmp/start.sh
-RUN chmod 755 /tmp/start.sh
 VOLUME ["/data"]
 
-RUN git clone https://github.com/mumble-voip/mumo.git
+ADD bin/entrypoint.sh /entrypoint.sh
+
+RUN git clone https://github.com/mumble-voip/mumo.git --depth 1
 
 WORKDIR /mumo
-CMD ["/tmp/start.sh"]
+CMD ["/entrypoint.sh"]
diff --git a/bin/start.sh b/bin/entrypoint.sh
old mode 100644
new mode 100755
similarity index 94%
rename from bin/start.sh
rename to bin/entrypoint.sh
index 1f10c39..93b95ae
--- a/bin/start.sh
+++ b/bin/entrypoint.sh
@@ -22,4 +22,5 @@ cp -r /data/mumo.ini /mumo
 cp -r /data/modules /mumo # TODO: Add from git
 cp -r /data/modules-available /mumo
 cp -r /data/modules-enabled /mumo
-exec /mumo/mumo.py
+
+exec su mumo -c "python3 /mumo/mumo.py"