server { 
    listen *:3443 ssl;

    ssl_certificate     /services-keys/ExpressTLS/cert.pem;
    ssl_certificate_key /services-keys/ExpressTLS/key.pem;
    ssl_protocols       TLSv1.3;

    location / {
        proxy_pass http://localhost:3080/;
    }
}

server {
    listen 127.0.0.1:3080;

    location / {
        proxy_pass https://express-tls:8443/;
    }
}