Update docker-compose.yml

upgrade traefik image version

examples/traefik/docker-compose.yml

@@ -2,7 +2,7 @@ version: '3'
 services:
   traefik:
     container_name: traefik
-    image: traefik:2.9
+    image: traefik:2.10
     ports:
       - 80:80 # HTTP
       - 443:443 # HTTPS