Caddy Server: Automatic HTTPS and Reverse Proxy Made Easy

Caddy Server: Modern Web Server

Caddy automatically obtains and renews SSL certificates via Let's Encrypt — no Certbot needed.

Install and Basic Caddyfile

apt update && apt install caddy

yourdomain.com {
    root * /var/www/html
    file_server
    encode gzip
}

api.yourdomain.com {
    reverse_proxy localhost:3000
}