diff --git a/.examples/dockerfiles/cron/apache/Dockerfile b/.examples/dockerfiles/cron/apache/Dockerfile
index 2a6f3e7..85445b5 100644
--- a/.examples/dockerfiles/cron/apache/Dockerfile
+++ b/.examples/dockerfiles/cron/apache/Dockerfile
@@ -7,4 +7,6 @@ RUN apt-get update && apt-get install -y \
 
 COPY supervisord.conf /etc/supervisor/supervisord.conf
 
+ENV NEXTCLOUD_UPDATE=1
+
 CMD ["/usr/bin/supervisord"]
diff --git a/.examples/dockerfiles/cron/fpm/Dockerfile b/.examples/dockerfiles/cron/fpm/Dockerfile
index 1e4b402..5bf88ff 100644
--- a/.examples/dockerfiles/cron/fpm/Dockerfile
+++ b/.examples/dockerfiles/cron/fpm/Dockerfile
@@ -7,4 +7,6 @@ RUN apt-get update && apt-get install -y \
 
 COPY supervisord.conf /etc/supervisor/supervisord.conf
 
+ENV NEXTCLOUD_UPDATE=1
+
 CMD ["/usr/bin/supervisord"]