Raise open files limit for Redis

docker/docker-compose.prod.yml

@@ -54,6 +54,11 @@ services:
   tmp:
     image: busybox
     command: chmod -R 777 /var/run/redis
+    ulimits:
+      nproc: 65535
+      nofile:
+         soft: 65535
+         hard: 65535
     volumes:
         - /var/run/redis