Update Nginx buffer settings

Author: getGit789

.ebextensions/01_application.config

@@ -25,3 +25,17 @@ option_settings:
     DefaultProcess: default
   aws:elasticbeanstalk:healthreporting:system:
     SystemType: enhanced
+
+files:
+  "/etc/nginx/conf.d/custom.conf":
+    mode: "000644"
+    owner: root
+    group: root
+    content: |
+      client_max_body_size 20M;
+      client_header_buffer_size 16k;
+      large_client_header_buffers 4 16k;
+
+container_commands:
+  01_reload_nginx:
+    command: "service nginx reload"