#WARNING This plugin is not compatible with the latest version of dokku. Unfortunately I do not have time to adapt this to the new plugin architecture at the moment.
Lets you fetch the URL the app is served from using the APP_URL environment variable.
cd /var/lib/dokku/plugins
git clone https://github.com/mikecsh/dokku-app-url
dokku plugins-install
The environment variable will be set next time you deploy.