Hola tengo activos en el directorio público (por simplicidad)

en el diseño i carga

<link href="/bootstrap/css/bootstrap.css" rel="stylesheet">
<link href="/assets/css/jumbotron.css" rel="stylesheet">
<link href="/assets/css/application.css" rel="stylesheet">

y en Desarrollo funciona bien pero en Producción los activos no están cargados.

MiDesarrollo.rb

Web::Application.configure do
  config.cache_classes = false
  config.whiny_nils = true
  config.consider_all_requests_local       = true
  config.action_controller.perform_caching = false
  config.action_mailer.raise_delivery_errors = false
  config.active_support.deprecation = :log
  config.action_dispatch.best_standards_support = :builtin
  config.active_record.mass_assignment_sanitizer = :strict
  config.active_record.auto_explain_threshold_in_seconds = 0.5
  config.assets.compress = false
  config.assets.debug = true
end

MiProducción.rb

Web::Application.configure do
  config.cache_classes = false
  config.consider_all_requests_local       = true # default false, zobrazuje errory
  config.action_controller.perform_caching = false # default true
  config.serve_static_assets = false
  config.assets.compress = true
  config.assets.compile = true # default false
  config.assets.digest = true
  config.i18n.fallbacks = true
  config.active_support.deprecation = :notify
end