Hi team,

I am trying to run the mcp-server in a Docker container behind an Nginx reverse proxy with a Let's Encrypt SSL certificate.

My setup is working correctly (Docker container is 'Up', Nginx is running, firewall is open), but I am getting a 502 Bad Gateway error. The Nginx error log shows "upstream prematurely closed connection". The curl -v output also confirms a 502 error after a successful connection.

It seems the mcp-server application closes the connection when it receives a standard HTTP request from the Nginx proxy.

Could you please advise on the correct Nginx configuration for reverse proxying? Is this setup supported?

Here is my Nginx config:

Thank you!