app.py

import os
import requests

# 从系统环境变量中获取下载URL
url = os.getenv('DL_URL')
if not url:
    raise ValueError("啊呀出错了")

destination_folder = '/root'
script_name = 'main.py'

# 下载文件到 /root 目录
file_path = os.path.join(destination_folder, script_name)
response = requests.get(url)
with open(file_path, 'wb') as file:
    file.write(response.content)

# 运行 main.py
os.system(f'python {file_path}')