title: I can not open the url of the site deployed with dokku
body: <p>Hello everybody) I started learning dokku. Going through the tutorial from the documentation for the Heroku Ruby on Rails &quot;Getting Started&quot; app I can't go to url generated by dokku in the browser. I am only using my local machine while learning and doing git push to localhost. This command works without errors, the container works, I get the url to the site, but I cannot open it in the browser. The same problem appears with another project, when I try to deploy a python django project, this is just a project skeleton created by django, without my code. It must show a welcome page and I want to see it when the site is running on dokku but I cannot go to the url. I tried to use dokku domains and dokku proxy but couldn't solve the problem. Please help me figure out how to fix this. I'm new to dokku, docker, nginx and deployment so the problem can be trivial. I'm also want to know on which ip, port dokku runs the sites and on which ip do I need to run the wsgi server inside the container?</p>