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/simple-git/promise.js

@@ -0,0 +1,17 @@
+console.error(`=============================================
+simple-git has supported promises / async await since version 2.6.0.
+ Importing from 'simple-git/promise' has been deprecated and will
+ report this error until the next major release of version 4.
+
+To upgrade, change all 'simple-git/promise' imports to just 'simple-git'
+=============================================`);
+
+const simpleGit = require('.');
+
+module.exports = Object.assign(
+   function () {
+      return simpleGit.gitP.apply(null, arguments);
+   },
+   simpleGit,
+   { default: simpleGit.gitP }
+);