- add docker-swarm deployment example

- update dependencies

tools/compose/simple.yml

@@ -1,4 +1,4 @@
-version: "3"
+version: "3.8"
 
 # In this Docker Compose example, it assumes that you maintain a reverse proxy externally (or chose not to).
 # The only two exposed ports here are from minio (:9000) and the app itself (:3000).