I get nginx error - location 404 not found

Question

When I try www.abc.com it works but when i try www.abc.com/def or www.abc.com/ghi/ get 404 error.

Here is my nginx config

worker_processes  1;

events {
    worker_connections  1024;
}

http {
    include       mime.types;
    default_type  application/octet-stream;
    sendfile        on;
    keepalive_timeout  65;

    server {
        listen       80;
        server_name www.abc.com;
        
    location / {
          proxy_pass http://I/;
        }         

    location /def{
        proxy_pass   http://oid-global-windows/;
        }

      location /ghi/ {
          proxy_pass http://oid-global-windows/;
        }
      
    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
            root   html;

        }
    }
}

I tried to tweak the config with alias instead of proxy_pass still no luck. BTW, oid-global-windows is a docker container name and nginx is in another container hosted in same windoes server.

The setup I followed was as per this link - https://www.mihajakovac.com/run-nginx-webserver-in-docker-on-windows/