fix(docker-compose) added services tag

templates/molgenis/0/docker-compose.yml

@@ -1,3 +1,6 @@
+version: '2'
+
+services:
   molgenis:
     image: registry.webhosting.rug.nl/molgenis/molgenis:latest
     ports:
@@ -67,8 +70,8 @@
       io.rancher.scheduler.global: true
 
 volumes:
-    postgres-data:
-    molgenis-data:
-    elastic-data:
-        driver: local
+  postgres-data:
+  molgenis-data:
+  elastic-data:
+    driver: local