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/js-yaml/index.js

@@ -0,0 +1,7 @@
+'use strict';
+
+
+var yaml = require('./lib/js-yaml.js');
+
+
+module.exports = yaml;