Problems mapping specific folder as a subdomain with Elastic Beanstalk

Well, I solved this problem by myself, but wanted to share if some else is looking for solution. So, we have one EB instance with multiple Django applications and our need is to show those applications under different subdomains.

The fastest way is to add "folder.rootdomain.com" A alias to the DNS records (Route 53) which points to the root domain of the EB instance.

Then you just add your own middleware class to the django project with custom "process_request" implementation and replace request.urlconf with the urls of the specific application and done!