diff --git a/context/Dockerfile b/context/Dockerfile
index ae8aaf252dfd7ab97779964b12a2232cf6264146..db583f3b65f42597e6d6e9414ae83a1e8593f03f 100644
--- a/context/Dockerfile
+++ b/context/Dockerfile
@@ -13,3 +13,5 @@ RUN apt-get update \
 
 COPY s3-purge.sh /usr/local/bin/s3-purge
 COPY crontab /etc/cron.d/s3-purge
+
+CMD tail -f /dev/null