server {
    listen       80 default_server;
    listen       [::]:80 default_server;
    server_name  _;

    location / {
        return 308 https://$host$request_uri;
    }
% if needs_le:
    location /.well-known/acme-challenge/ {
        alias /var/lib/dehydrated/acme-challenges/;
    }
% endif
}