nginx basic ssl config

``` server {     listen 80 default_server;     listen [::]:80 default_server; 
     location / {         return 301 https://$host$request_uri;     } } 
 server {     listen 443 ssl http2;     listen [::]:443 ssl http2; 
     ssl_certificate /path/to/signed_cert_plus_intermediates;     ssl_certificate_key /path/to/private_key;     ssl_trusted_certificate /path/to/root_CA_cert_plus_intermediates;     ssl_session_timeout 1d;     ssl_session_cache shared:MozSSL:10m;  # about 40000 sessions     ssl_session_tickets off; 
     # OCSP stapling     ssl_stapling on;     ssl_stapling_verify on; 
     # curl https://ssl-config.mozilla.org/ffdhe2048.txt > /path/to/dhparam     ssl_dhparam /path/to/dhparam; 
     # intermediate configuration     ssl_protocols TLSv1.2 TLSv1.3;     ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-CHACHA20-POLY1305;     ssl_prefer_server_ciphers off; 
     # HSTS (ngx_http_headers_module is required) (63072000 seconds)     add_header Strict-Transport-Security "max-age=63072000" always; } ```