```ruby
# Be sure to restart your server when you modify this file.

Rails.application.config.session_store :cookie_store, key: '_umbra_session', domain: :all
```

Set library local domain up for session cookie
user
```ruby
# Be sure to restart your server when you modify this file.

Rails.application.config.session_store :cookie_store, key: '_umbra_session', domain: ENV['LOGIN_COOKIE_DOMAIN']
```
assistant