selfhosted_templates VS free-programming-books

I recently discovered selfhostedpro... He has a nice docker template: https://github.com/SelfhostedPro/selfhosted_templates

I tried to install nextcloud on docker using portainer and a template from https://github.com/SelfhostedPro/selfhosted_templates. When I installed using the template the error said I can't use port 443 b/c its a https port. So I tired to use other ports but that also failed. I want to run nextcloud with out a reverse proxy manager. I only intend to access it from a VPN. Any guides that I could use ? Thanks.

Check out this template https://github.com/SelfhostedPro/selfhosted_templates

Portainer to host services - Using a fork of templates posted by a Youtuber SelfhostedPro https://github.com/SelfhostedPro/selfhosted_templates

and running docker/portainer withthe template from https://github.com/SelfhostedPro/selfhosted_templates on portainer for a list handy containers

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