Temporarily use dnsrr in place of VIP while issue persists on PWD

docker-compose.yml

@@ -10,6 +10,8 @@ services:
         image: functions/gateway:0.5.3
         networks:
             - functions
+        environment:
+            dnsrr: "true"  # Temporarily use dnsrr in place of VIP while issue persists on PWD
         deploy:
             placement:
                 constraints: [node.role == manager]