diff --git a/build-and-run.sh b/build-and-run.sh
index 1d18a7c..7692916 100644
--- a/build-and-run.sh
+++ b/build-and-run.sh
@@ -26,8 +26,8 @@ if docker images --format '{{.Repository}}:{{.Tag}}' | grep -q "^${IMAGE_NAME}$"
 fi
 
 # ======== 进入源码目录并拉取代码 ========
-if [ ! -d "${GIT_DIR}/.git" ]; then
-  echo "❌ 错误：找不到 Git 仓库目录：${GIT_DIR}"
+if [ ! -d ".git" ]; then
+  echo "❌ 当前目录不是 Git 仓库，请在 gradio 仓库目录内运行。"
   exit 1
 fi