I have a problem with a reverse proxy configuration ,witch I can’t find a solution for it. My nextcloud configuration is working fine with DynDNS over the internet ,everything is green at the Security & setup warnings. When i connect locally over Http is also fine. But after my reverseproxy setup im getting this famous warning.
The reverse proxy is in a separate container on Ubuntu 18.04. there is my config: 
Again I’m just started to learn this stuff ,and I really want to know whats the problem is? Can maybe put some more light on this issue?
also here is the conf file from the apache where nextcloud is running.
