nginx.conf

server {  
        listen 80;  
        listen [::]:80;  
  
        root /var/www/html;  
        index index.html index.htm index.nginx-debian.html;  
  
        server_name example.com www.example.com;  
  
        location / {  
                proxy_pass http://simple_event_sender:8080;  
        }  
  
        location ~ /.well-known/acme-challenge {  
                allow all;  
                root /var/www/html;  
	        }  
	}