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/yaml/dist/schema/common/map.d.ts

@@ -0,0 +1,2 @@
+import type { CollectionTag } from '../types';
+export declare const map: CollectionTag;