I am running the Odoo docker image behind Nginx Proxy Manager which for the most part is running fine. The issue is things like PDF generation that fail, if I change the below system parameters the pdfs ect all work

web\.base\.url\ http://localhost:8069

\ web.base.url.freeze True

The issue then becomes email links to clients etc don't have the proper domain name they show localhost:8069

What is the correct solution to the issue, is there something missing in the proxy config or is there something I can change in Odoo? I don't fully understand the path that the pdf generation is taking that is different to web traffic.