[add] added 403 catchall for invalid domains

proxy/files/nginx.conf

@@ -40,6 +40,26 @@ http {
         }
     }
 
+    # catch all non domains
+    server {
+        listen 8443 ssl;
+
+        # prevent redirecting to 8080 port
+        # (e.g. when trailing slash is missed)
+        port_in_redirect off;
+
+        server_name "";
+        
+        ssl_certificate        /service/ssl/nixdomain/fullchain.pem;
+        ssl_certificate_key    /service/ssl/nixdomain/privkey.pem;
+        
+        location / {
+            deny all;
+            return 403;
+        }
+
+    }
+    
     # the following variable is automatically populated via entrypoint.sh 
     #<SERVER>