GitLab with nginx already installed

I have been trying to install GitLab on my server for several hours with nginx already installed.

I can access GitLab through port 8081 ( but I would like to do it from, I followed all the instructions exactly, at least I think, but I can’t get it to work, could someone help me please?

These are my config file: (files uploaded with PrivateBin)

Thanks for your help