docker中执行python报ImportError: libGL.so.1: cannot open shared object file: No such file or dir错误的解决方法

错误细节：

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python3.8/dist-packages/cv2/__init__.py", line 181, in <module>
    bootstrap()
  File "/usr/local/lib/python3.8/dist-packages/cv2/__init__.py", line 153, in bootstrap
    native_module = importlib.import_module("cv2")
  File "/usr/lib/python3.8/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
ImportError: libGL.so.1: cannot open shared object file: No such file or directory

错误原因：所用的docker镜像中缺乏opencv所需依赖（libGL.so.1）

解决方法：通过安装 opencv-python的headless 版本，它会安装所有相关的依赖项，具体安装指令如下：

# 报错opencv安装指令
pip install opencv-python==4.8.0.68

# opencv-python-headless安装指令
pip install opencv-python-headless==4.8.0.68

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