From 65074cb1e46e905373a449df71caa1ca6657ee39 Mon Sep 17 00:00:00 2001
From: Giacomo Longo <gabibbo97@gmail.com>
Date: Sat, 12 Jun 2021 12:11:29 +0200
Subject: [PATCH] GUACAMOLE-1005: Cleanup apt cache after package installation

---
 Dockerfile | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Dockerfile b/Dockerfile
index 781e55c2f..5af326bb3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -51,7 +51,9 @@ RUN /opt/guacamole/bin/build-guacamole.sh "$BUILD_DIR" /opt/guacamole "$BUILD_PR
 FROM tomcat:${TOMCAT_VERSION}-${TOMCAT_JRE}
 
 # Install XMLStarlet for server.xml alterations
-RUN apt-get update -qq && apt-get install -y xmlstarlet
+RUN apt-get update -qq \
+    && apt-get install -y xmlstarlet \
+    && rm -rf /var/lib/apt/lists/*
 
 # This is where the build artifacts go in the runtime image
 WORKDIR /opt/guacamole