nginx config

server {
    listen 80;
    server_name premonstrati2021.cz www.premonstrati2021.cz;

    return 301 https://$server_name$request_uri;
}

server {
        listen       443 ssl http2;
        listen       [::]:443 ssl http2;

        root /var/www/html/app/dist;

        server_name  premonstrati2021.cz www.premonstrati2021.cz;

        ssl_dhparam /etc/nginx/dhparam.pem
        ssl_certificate "/etc/letsencrypt/live/premonstrati2021.cz/cert.pem";
        ssl_certificate_key "/etc/letsencrypt/live/premonstrati2021.cz/privkey.pem";
        ssl_verify_client      optional;
        ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
        ssl_ciphers 'ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-G$

        location / {
                proxy_pass http://0.0.0.0:3000;
                proxy_http_version 1.1;
                proxy_ssl_protocols           TLSv1 TLSv1.1 TLSv1.2;
                proxy_set_header Upgrade $http_upgrade;
                proxy_set_header Connection 'upgrade';
                proxy_set_header Host $host;
                proxy_cache_bypass $http_upgrade;
                proxy_ssl_server_name on;
        }
}