A Way to set Host tag in proxied request

Hello,

First , thanks for the project! 

I tried using  it, works well, but my application needs correct "domain host headers". Basically I need the domain to be the same as the one which is exposed to the outside.

I can do my local reverse proxy, which will change the header but it is an extra step. Is it possible to do now somehow or do you have a tip how to achieve this functionality?