Fix double logging of PHP error by nginx in docker container

docker/nginx.conf

@@ -1,6 +1,5 @@
 user jumpapp;
 worker_processes auto;
-error_log /dev/stderr warn;
 
 events {
     worker_connections 1024;
@@ -17,7 +16,6 @@ http {
                           '$request_time $upstream_response_time $pipe $upstream_cache_status';
 
     access_log /dev/stdout main_timed;
-    error_log /dev/stderr notice;
 
     keepalive_timeout 5;