reverse proxy

So I'm trying to get reverse proxy working. I can get it to work with https://subdomain.domain.com, however i can't get it to work with https://domain.com/subdir (or https://subdomain.domain.com/subdir for that matter). Any idea what i have to change in the NGINX config? My location block is...

Hi, I can't get my reverse proxy to work in order to access Proxmox via http(s)://domain.name/proxmox. However, if I edit the configuration "location /proxmox" to "location /" then I can access it via http(s)://domain.name/, but I'd rather use /proxmox instead of having it at the "root". I...