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/lodash.isnumber/README.md

@@ -0,0 +1,18 @@
+# lodash.isnumber v3.0.3
+
+The [lodash](https://lodash.com/) method `_.isNumber` exported as a [Node.js](https://nodejs.org/) module.
+
+## Installation
+
+Using npm:
+```bash
+$ {sudo -H} npm i -g npm
+$ npm i --save lodash.isnumber
+```
+
+In Node.js:
+```js
+var isNumber = require('lodash.isnumber');
+```
+
+See the [documentation](https://lodash.com/docs#isNumber) or [package source](https://github.com/lodash/lodash/blob/3.0.3-npm-packages/lodash.isnumber) for more details.