```ruby
module Idobata::Hook
  class DockerHub < Base
    screen_name 'Docker Hub automated build'
    icon_url hook_image_url('mono_vertical_small.png')
  end
end
```

Rename screen_name: Docker Hub automated build -> Docker Hub
user
```ruby
module Idobata::Hook
  class DockerHub < Base
    screen_name 'Docker Hub'
    icon_url hook_image_url('mono_vertical_small.png')
  end
end
```
assistant