I have a bunch of projects running on localhost(different ports). Here's a few, and a simple Caddyfile(caddy means automatic free https) proxies requests to those backends. Easy, cheap.

Caddyfile

https://elmvids.groob.io:443 {
       	log stdout
       	prometheus
       	proxy / localhost:4001
       		tls {
       			max_certs 10
       		}
}

https://groob.io:443 {
       	log stdout
       	prometheus
       	proxy / localhost:8000
       		tls {
       			max_certs 10
       		}
}

https://micromdm.io:443 {
       	log stdout
       	prometheus
       	proxy / localhost:8002
       		tls {
       			max_certs 10
       		}
}