NextCloud w/ NGINX on Hassio/rpi3

So I already have Duckdns set up on a rpi3. I was using the domain to access my Home Assistant remotely. It has worked with little issue but now I'm trying to use NextCloud on a different computer. I followed this guide https://www.youtube.com/watch?v=3AYl_o8H450 and was able to get my duckdns domain to connect to NextCloud. The problem I have now is I want to use NextCloud and Home Assistant. I'm new to NGINX. It turns out that Hassio has a NGINX add-on. I installed and configured it so now I'm able to connect to Hassio on my pi and portainer/NGINX on docker. I have no idea how to get NextCloud connected again. Do I need to replace NGINX on docker with Apache? Is there a discord or IRC for asking question about this?