fix: Update nginx config to use dynamic DNS resolution

- Replace upstream blocks with resolver directive
- Use variables for backend addresses to avoid startup errors
- Simplify configuration with single server block
- Add health check endpoint

server/api/node_modules/test-exclude/is-outside-dir-win32.js

@@ -0,0 +1,10 @@
+'use strict';
+
+const path = require('path');
+const minimatch = require('minimatch');
+
+const dot = { dot: true };
+
+module.exports = function(dir, filename) {
+    return !minimatch(path.resolve(dir, filename), path.join(dir, '**'), dot);
+};