docker-compose back to version 3.7

docker-compose.yml

@@ -1,4 +1,4 @@
-version: '3.8'
+version: '3.7'
 
 volumes:
   redisdb:
@@ -92,8 +92,6 @@ services:
         image: qlikgear/qmi-cloud-worker:latest
         container_name: qmi-cloud-worker
         restart: on-failure
-        deploy:
-            replicas: 2
         environment:
             - REDIS_URL=redis://redis
             - MONGO_URI=mongodb://root:example@mongo/qmicloud?authSource=admin