Image lightbox not working in subfolder install

@pfaffman Pretty much everything else is working, you can see it here at https://www.finalbuilder.com - website, forums etc all accessible. /forums is reverse proxied via IIS - you can see my config in this topic - Subfolder install - external links get changed/redirected to site relative links

If I access http://localhost/sidekiq in the container I get the standard this page is private or doesn’t exist response. If I try http://www.finalbuilder.com/forums/sidekiq I just get ‘Forbiddden’. Not sure about the non standard port, haven’t seen that mentioned anywhere with regards to subfolder installs. I get the feeling this is an issue with the proxy not passing enough info for sidekiq to authenticate.

I’m going to have a go at setting up a dev environment over the next few days and see if I can figure out what is going on, but not being a ruby dev (mostly c# and typescript) I’m not sure how far I will get.