diff --git a/Dockerfile b/Dockerfile
index 8d6bdc98..07f49d70 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,30 +1,18 @@
-FROM debian:jessie
+FROM debian:buster
 
-## The Data from the official point release.
 ENV ioquake_data linuxq3apoint-1.32b-3.x86.run
 
-RUN echo "deb http://httpredir.debian.org/debian jessie contrib" >> /etc/apt/sources.list && \
-        apt-get update && \
-        apt-get install -y quake3-server \
-        wget \
-        curl && \
-            apt-get clean
-
-RUN rm -rf \
-        /var/lib/apt/lists/* \
-        /tmp/* \
-        /var/tmp/* \
-        /usr/share/locale/* \
-        /var/cache/debconf/*-old \
-        /var/lib/apt/lists/* \
-        /usr/share/doc/*
+RUN apt-get update && \
+    apt-get install -y quake3-server wget curl && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* /usr/share/locale/* /var/cache/debconf/*-old /usr/share/doc/*
 
 WORKDIR /usr/share/games/quake3
 
 RUN wget "http://youfailit.net/pub/idgames/idstuff/quake3/linux/${ioquake_data}" && \
-        chmod +x ${ioquake_data} && \
-        ./${ioquake_data} --tar xvf && \
-        rm -rf ./${ioquake_data}
+    chmod +x ${ioquake_data} && \
+    ./${ioquake_data} --tar xvf && \
+    rm -rf ./${ioquake_data}
 
 RUN curl -L https://github.com/nrempel/q3-server/raw/master/baseq3/pak0.pk3 -o /usr/share/games/quake3/baseq3/pak0.pk3