fix: Use default values for PORT and BASE_PATH in vite config

artifacts/image-gen/vite.config.ts

@@ -4,27 +4,15 @@ import tailwindcss from "@tailwindcss/vite";
 import path from "path";
 import runtimeErrorOverlay from "@replit/vite-plugin-runtime-error-modal";
 
-const rawPort = process.env.PORT;
-
-if (!rawPort) {
-  throw new Error(
-    "PORT environment variable is required but was not provided.",
-  );
-}
-
+// 在生產環境建置時使用預設值
+const rawPort = process.env.PORT || "7860";
 const port = Number(rawPort);
 
 if (Number.isNaN(port) || port <= 0) {
   throw new Error(`Invalid PORT value: "${rawPort}"`);
 }
 
-const basePath = process.env.BASE_PATH;
-
-if (!basePath) {
-  throw new Error(
-    "BASE_PATH environment variable is required but was not provided.",
-  );
-}
+const basePath = process.env.BASE_PATH || "/";
 
 export default defineConfig({
   base: basePath,