spreecommerce/solidus, use dropbox for storage images. (using gem paperclip-dropbox)

dropbox_storage.rb

#initializer/dropbox_storage.rb

attachment_config = {

  dropbox_credentials: Rails.root.join('config/dropbox.yml'),
  storage: :dropbox,

  styles: {
    mini:     "48x48>",
    small:    "100x100>",
    product:  "240x240>",
    large:    "600x600>"
  },

  path:           "/spree/products/:id/:style/:basename.:extension",
  url:            '/spree/products/:id/:style/:basename.:extension',
  default_url:    "/spree/products/:id/:style/:basename.:extension",
  default_style:  "product"
}

attachment_config.each do |key, value|
  Spree::Image.attachment_definitions[:attachment][key.to_sym] = value
end