nginx.conf

server {

  listen    *:80;

  server_name ...;

  root /home/www-data/.../htdocs;

  error_log /home/www-data/logs/....error.log;
  access_log /home/www-data/logs/....access.log combined;

  client_max_body_size       100m;
  client_body_buffer_size    128k;
  
  location  /media/ {
    alias /home/www-data/.../media/;
  }
  location  /static/ {
    alias /home/www-data/.../static/;
  }
  location / {
    try_files $uri @upstream;
  }
  
  location @upstream {
    proxy_pass http://unix:/home/www-data/.../tmp/gunicorn.sock;
    proxy_redirect off;
    proxy_set_header Host $host;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-Protocol $scheme;
    client_body_buffer_size 128k;
    proxy_connect_timeout 120;
    proxy_send_timeout 120;
    proxy_read_timeout 120;
    proxy_buffer_size 4k;
    proxy_buffers 4 32k;
    proxy_busy_buffers_size 64k;
    proxy_temp_file_write_size 64k;
  }
}