"set it and forget it" Secure Connection?

Hi there.
I want to connect my HA to internet in the close future, and I se what most people use is “Let’s Encrypt” which for my understanding need me to regularly connect it to port 80 and get a new certificate.
That’s not a good solution for me. I want a secure (enough) set it and forget it solution.
Any solutions? I am running Hass.IO on docker with ubuntu server.

check this