diff --git a/Dockerfile b/Dockerfile
index e65f657..8fd38ac 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -94,7 +94,9 @@ RUN apt-get update \
         /tmp/README.md \
         /tmp/LICENSE \
         /tmp/k9s_Linux_amd64.tar.gz \
-    && rm -f /etc/ssh/ssh_host_*
+    && rm -f /etc/ssh/ssh_host_* \
+    && apt-get clean
+
 
 COPY docker/sshd/10-lfk-base.conf /etc/ssh/sshd_config.d/10-lfk-base.conf
 COPY docker/nginx/webssh.conf /etc/nginx/conf.d/webssh.conf