added the redirect to the nginx conf

app/uploaders/image_uploader.rb

@@ -4,6 +4,7 @@
 
 class ImageUploader < CarrierWave::Uploader::Base
   include CarrierWave::MiniMagick
+  storage :s3
 
   def store_dir
     "uploads/images"

chef/cookbooks/common/templates/default/nginx.conf.erb

@@ -108,13 +108,14 @@ http {
      proxy_pass http://thin_cluster;
      break;
     }
+
+    rewrite ^/uploads/images/(.*)$ https://joindiaspora.s3.amazonaws.com/uploads/images/$1 permanent;
    }
 
    error_page 500 502 503 504 /50x.html;
    location = /50x.html {
     root html;
    }
-
 }
 
 }