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/bin.mjs

@@ -0,0 +1,11 @@
+#!/usr/bin/env node
+
+import { UserError, cli, help } from './dist/cli.mjs'
+
+cli(process.stdin, error => {
+  if (error instanceof UserError) {
+    if (error.code === UserError.ARGS) console.error(`${help}\n`)
+    console.error(error.message)
+    process.exitCode = error.code
+  } else if (error) throw error
+})