fix: 환경별 Base URL 구성이 올바르게 되지 않던 문제 해결

Author: ghdtnals

src/shared/api/config.ts

@@ -1,7 +1,13 @@
-export function getBaseUrl() {
-  if (process.env.VERCEL === "1") {
-    return `https://${process.env.VERCEL_URL}`;
-  }
+import { headers } from "next/headers";
 
-  return "http://localhost:3000";
+export async function getBaseUrl() {
+  const h = await headers();
+  const host = h.get("host");
+
+  const protocol =
+    host?.includes("localhost") || process.env.NODE_ENV === "development"
+      ? "http"
+      : "https";
+
+  return `${protocol}://${host}`;
 }