fix: handle non-empty directory on first deploy

spug/deploy-docker-compose.sh

@@ -36,10 +36,21 @@ echo "========================================"
 
 # ================= Step 1: 更新代码 =================
 echo "========== 更新代码 =========="
+
+# 确保目录存在
+mkdir -p "${PROJECT_DIR}"
 cd "${PROJECT_DIR}"
 
 if [ ! -d ".git" ]; then
     echo "首次部署，克隆仓库..."
+    # 检查目录是否为空，非空则备份
+    if [ "$(ls -A ${PROJECT_DIR} 2>/dev/null)" ]; then
+        echo "目录非空，备份现有文件..."
+        backup_dir="${PROJECT_DIR}_backup_$(date +%Y%m%d_%H%M%S)"
+        mkdir -p "${backup_dir}"
+        mv ${PROJECT_DIR}/* ${PROJECT_DIR}/.[!.]* ${backup_dir}/ 2>/dev/null || true
+        echo "已备份到：${backup_dir}"
+    fi
     git clone "${GIT_REPO}" .
     git checkout "${GIT_BRANCH}"
 else