Add retry middleware

dynamic.yml

@@ -1,4 +1,10 @@
 http:
+  serversTransports:
+    fast-upstreams:
+      maxIdleConnsPerHost: 64
+      forwardingTimeouts:
+        idleConnTimeout: 30s
+        responseHeaderTimeout: 15s
   middlewares:
     crowdsec:
       plugin:
@@ -20,6 +26,10 @@ http:
           - application/javascript
           - application/json
           - text/plain
+    retry-fast:
+      retry:
+        attempts: 2
+        initialInterval: 50ms
   routers:
     qbit:
       rule: Host(`qbit.gbanyan.net`)