Updated docker compose syntax with respect to dependencies to maintain consistency with the upstream docker-compose role.

vars/containers/weatherfeeder.yml

@@ -17,6 +17,10 @@ weatherfeeder:
   # Define the ports that should be opened to the outside world.
   #ports: []
 
+  # Define the dependencies for this container.
+  dependencies:
+    - nats
+
   # Define environment variables to be passed to the container.
   #environment_variables: []