A full guide for installing Nextcloud on TrueNAS Scale with Collabora integration and outside access through Nginx Proxy Manager

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@owl

Also, what do you mean when you say that it works when you use the host nginx and let it use 443 port? Are you saying that you set the Host during Nextcloud installation to your Nginx Proxy Manager internal IP and then have Nginx Proxy Manager listen on port 443 instead of 30022?

Please see my another post at the bottom of this thread:

Please help fixing this Strict-Transport-Security error in Nextcloud - Apps and Virtualization - TrueNAS Community Forums