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/path-to-regexp/package.json

@@ -0,0 +1,30 @@
+{
+  "name": "path-to-regexp",
+  "description": "Express style path to RegExp utility",
+  "version": "0.1.13",
+  "files": [
+    "index.js",
+    "LICENSE"
+  ],
+  "scripts": {
+    "test": "istanbul cover _mocha -- -R spec"
+  },
+  "keywords": [
+    "express",
+    "regexp"
+  ],
+  "component": {
+    "scripts": {
+      "path-to-regexp": "index.js"
+    }
+  },
+  "license": "MIT",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/pillarjs/path-to-regexp.git"
+  },
+  "devDependencies": {
+    "mocha": "^1.17.1",
+    "istanbul": "^0.2.6"
+  }
+}