Added RabbitMQ, for serving as Celery broker.

docker/docker-compose.yml

@@ -11,6 +11,14 @@ redis:
   image: redis:3.2.8
   container_name: redis
   restart: always
+  ports:
+   - "127.0.0.1:6379:6379"
+rabbit:
+    image: rabbitmq:3.6.7
+    container_name: rabbit
+    restart: always
+    ports:
+        - "127.0.0.1:5672:5672"
 blender_cloud:
   image: armadillica/blender_cloud:latest
   container_name: blender_cloud