Trigger the ERR trap

Author: keithduncan

packer/linux/conf/docker/cron.hourly/docker-low-disk-gc

@@ -33,7 +33,7 @@ if ! /usr/local/bin/bk-check-disk-space.sh ; then
   docker builder prune --all --force --filter "until=${DOCKER_PRUNE_UNTIL}"
 
   if ! /usr/local/bin/bk-check-disk-space.sh ; then
-    echo "Disk health checks failed" >&2
+    echo "Disk health checks failed" >&2 && false
     exit 1
   fi
 fi