diff --git a/Containers/mastercontainer/Dockerfile b/Containers/mastercontainer/Dockerfile
index a3b455ab..2cd39b10 100644
--- a/Containers/mastercontainer/Dockerfile
+++ b/Containers/mastercontainer/Dockerfile
@@ -26,6 +26,9 @@ RUN curl "https://caddyserver.com/api/download?os=linux&arch=amd64" -o "/usr/bin
     && chmod +x /usr/bin/caddy \
     && /usr/bin/caddy version
 
+COPY --from=docker:dind /usr/local/bin/docker /usr/local/bin/
+RUN chmod +x /usr/local/bin/docker
+
 RUN cd /var/www/docker-aio; \
     git clone https://github.com/nextcloud/all-in-one.git .; \
     chmod 770 -R ./; \
diff --git a/Containers/mastercontainer/cron.sh b/Containers/mastercontainer/cron.sh
index 31e1d619..cf1b8d21 100644
--- a/Containers/mastercontainer/cron.sh
+++ b/Containers/mastercontainer/cron.sh
@@ -1,7 +1,10 @@
 #!/bin/sh
-set -eu
+set -eux
 
 while true; do
+    # Check for updates and send notification if yes
     sudo -u www-data php /var/www/docker-aio/php/src/Cron/cron.php
+    # Remove dangling images
+    sudo -u www-data docker image prune -f
     sleep 1d
 done