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/json5/lib/require.js

@@ -0,0 +1,4 @@
+// This file is for backward compatibility with v0.5.1.
+require('./register')
+
+console.warn("'json5/require' is deprecated. Please use 'json5/register' instead.")