diff --git a/build.sh b/build.sh
index 5dfb1d4..fa4da29 100755
--- a/build.sh
+++ b/build.sh
@@ -16,3 +16,5 @@ curl -X DELETE \
   -H "X-Auth-Email: $CLOUDFLARE_EMAIL" \
   --data '{"purge_everything":true}' \
   "https://api.cloudflare.com/client/v4/zones/$CLOUDFLARE_IDENTIFIER/purge_cache"
+
+exec tail -f /dev/null