feat: FRO-28 Integrate Frontend Build as a seperate image (#2)

Reviewed-on: #2
Co-authored-by: Janis <janis.e.20@gmx.de>
Co-committed-by: Janis <janis.e.20@gmx.de>

src/runtimeConfig.ts

@@ -0,0 +1,14 @@
+// runtimeConfig.ts
+// Reads runtime configuration injected into window.__RUNTIME_CONFIG__ (created by env.js at container start)
+
+declare global {
+  interface Window { __RUNTIME_CONFIG__?: { API_URL?: string } }
+}
+
+const runtime = (globalThis as any).__RUNTIME_CONFIG__ || {};
+
+export const API_URL = runtime.API_URL || (import.meta.env.VITE_API_URL as string) || 'http://localhost:9000';
+
+export function getApiUrl(): string {
+  return API_URL;
+}