How to make a certificate for web development on a local computer?

Question

ubuntu

In Ubuntu, under docker on nginx, I run a server for development on php. I prescribe my domain in hosts, for convenience. I go to the site with chrome.
You need a certificate to get chrome on https. What is the easiest and free way to get it, make it? Can someone explain step by step? For the stupid ones :)

Answer 1

Google 'ubuntu self-signed certificate'.
There are plenty of instructions on the internet for this.

Answer 2

If you have your own domain, then Let's Encrypt with DNS confirmation does not require any ports outside.
For example https://github.com/Neilpang/acme.sh/wiki/DNS-manua...