Update start_gradio.sh

start_gradio.sh

@@ -94,7 +94,13 @@ fi
 echo "模型路径: ${MODEL_PATH}"
 echo "启动 Gradio..."
 
-python app.py \
+PYTHON_BIN="${PYTHON_BIN:-python3}"
+if ! command -v "$PYTHON_BIN" >/dev/null 2>&1; then
+    echo "未找到 Python 解释器（当前设置: $PYTHON_BIN），请确认镜像已安装 python3。"
+    exit 1
+fi
+
+"$PYTHON_BIN" app.py \
     --host "$HOST" \
     --port "$GRADIO_PORT" \
     --model "$MODEL_PATH" \