Hass.io Remote access with custom domain and Lets Encrypt

I’m looking to access my Home Assistant remotely. I currently have a Odroid HC1 which is running NextcloudPI, I added docker and Hass.io. My nextcloud server already has a Let’s Encrypt ssl certificate and I’m wondering how I can remote access Home Assistant using ssl without using DuckDNS. I tried to just forward the 8123 port on the router but it is still looking for a secure connection.