server {
    listen 443 ssl;
    listen [::]:443 ssl;
    server_name {{ dns_name }};

    ssl_certificate /etc/letsencrypt/live/{{ dns_name }}/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/{{ dns_name }}/privkey.pem;

    location / {
        proxy_pass https://localhost:8443;
        proxy_buffering off;
        proxy_http_version 1.1;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

        # for websockets
        proxy_set_header Connection "Upgrade";
        proxy_set_header Upgrade $http_upgrade;
    }
}