I would like to issue a WARNING to all users using this APP,
The source image and repository for this app / docker image are greatly OUTDATED - From 2021,
It is feasible that users of this app expose this nginx externally to the public internet, those user are facing security risks due to using outdated software, the image is built on-top of openresty, which itself is a standalone extended distribution of nginx, both products are constantly under security scrutiny and cycles of vulnerability detection and patching.
I have raised a closed github issue here: https://github.com/jlesage/docker-nginx-proxy-manager/issues/331
I recommend users to move to the official image: https://github.com/NginxProxyManager/nginx-proxy-manager/tree/develop
it is a drop in replacement, when using: https://github.com/chrizzo84/unraid-templates/tree/main/nginx-proxy-manager-jc21