I'm working on an app where I want the images to be hosted locally, but the file attachments to be hosted on S3.
1. I configured my web app to have 2 dragonfly apps with different configurations - is this correct?
2. Sometimes I notice that images don't load properly. I get the error: `function thumb not registered with <# Dragonfly::Processor >` (just typed that - not pasted).
I attached the "Dragonfly::Middleware" twice - one for images, one for attachments. When I run `rake middleware` I see two "Dragonfly::Middleware" rack apps. This feels weird to me.
Am I doing something wrong?