diff --git a/nginx.conf b/nginx.conf
index 9af542a..0c10698 100644
--- a/nginx.conf
+++ b/nginx.conf
@@ -17,32 +17,32 @@ http {
         }
 
         location / {
-            # Use the placeholders for the proxy pass
-            proxy_pass ${PROTOCOL}://${BACKEND_ADDRESS}:${BACKEND_PORT};
+            # Use the placeholders for the proxy pass (ensure these are properly substituted)
+            proxy_pass http://backend:port;  # Replace with actual backend address and port
             proxy_http_version 1.1;
             proxy_set_header Upgrade $http_upgrade;
-            proxy_set_header Connection "Upgrade";
+            proxy_set_header Connection $connection_upgrade;  # This can handle both Upgrade and close
             proxy_set_header Host $host;
             proxy_set_header X-Real-IP $remote_addr;
             proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
             proxy_set_header Accept-Encoding "";
             proxy_buffering off;
-            proxy_ssl_verify off;  # Skip SSL verification, be cautious
-
-            # Enable response body filtering
-            sub_filter_once off;
-
-            # Inject the Matomo content just before </head>
-#            sub_filter '</head>' '<script src="/matomo.js"></script></head>';
-	    sub_filter '</head>' '<!-- Matomo --><script>var _paq = window._paq = window._paq || [];_paq.push(["setDocumentTitle", document.domain + "/" + document.title]);_paq.push(["setCookieDomain", "*.nixc.us"]);_paq.push(["setDomains", ["*.nixc.us"]]);_paq.push(["setDoNotTrack", true]);_paq.push(["disableCookies"]);_paq.push(["trackPageView"]);_paq.push(["enableLinkTracking"]);(function() {var u="//m.nixc.us/";_paq.push(["setTrackerUrl", u+"matomo.php"]);_paq.push(["setSiteId", "1"]);var d=document, g=d.createElement("script"), s=d.getElementsByTagName("script")[0];g.async=true; g.src=u+"matomo.js"; s.parentNode.insertBefore(g,s);})();</script><noscript><p><img src="//m.nixc.us/matomo.php?idsite=1&amp;rec=1" style="border:0;" alt="" /></p></noscript><!-- End Matomo Code --></head>';
-            sub_filter_types application/xml application/json text/css text/javascript application/javascript text/plain;
 
+            # Error handling (example)
+            error_page 502 /502.html;
+            location = /502.html {
+                root  /usr/share/nginx/html;
+                internal;
+            }
         }
 
-#        location /matomo.js {
-#            alias /matomo.js;
-#            types { application/javascript js; }  # Explicitly set the MIME type for .js files
-#            default_type application/javascript;  # Setting default MIME type for this location block
-#        }
+        # Custom location for WebSocket if needed
+        # location /ws {
+        #     proxy_pass http://backend:port;
+        #     proxy_http_version 1.1;
+        #     proxy_set_header Upgrade $http_upgrade;
+        #     proxy_set_header Connection "Upgrade";
+        #     # Other necessary headers...
+        # }
     }
 }