nginx/sa.conf

server {
    listen 80;
    listen [::]:80;

    location /.well-known/acme-challenge/ {
        root /var/www/certbot;
    }

    location / {
	    return 301 https://$host$request_uri;
    }
}

server {
    listen 443 ssl default_server;
    listen [::]:443 ssl default_server;
    ssl_certificate /etc/nginx/certs/live/${SA_PUBLIC_DOMAIN_NAME}/fullchain.pem;
    ssl_certificate_key /etc/nginx/certs/live/${SA_PUBLIC_DOMAIN_NAME}/privkey.pem;
    ssl_protocols TLSv1.3;
    ssl_prefer_server_ciphers on;
    #ssl_dhparam /etc/nginx/dhparam.pem;
    ssl_ciphers EECDH+AESGCM:EDH+AESGCM;
    ssl_ecdh_curve secp384r1;
    ssl_session_timeout  10m;
    ssl_session_cache shared:SSL:10m;
    ssl_session_tickets off;
    ssl_stapling on;
    ssl_stapling_verify on;
    resolver 8.8.8.8 8.8.4.4 valid=300s;
    resolver_timeout 5s;
    # Disable strict transport security for now. You can uncomment the following
    # line if you understand the implications.
    #add_header Strict-Transport-Security "max-age=63072000; includeSubDomains; preload";
    add_header X-Frame-Options DENY;
    add_header X-Content-Type-Options nosniff;
    add_header X-XSS-Protection "1; mode=block";
}