Linux服务器Docker安装pip install mysqlclient失败解决方法

 ERROR: Command errored out with exit status 1:
     command: /usr/local/python3/bin/python3.8 -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-n39j9wjd/mysqlclient/setup.py'"'"'; __file__='"'"'/tmp/pip-install-n39j9wjd/mysqlclient/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-pip-egg-info-e9wzw22i
         cwd: /tmp/pip-install-n39j9wjd/mysqlclient/
    Complete output (12 lines):
    /bin/sh: mysql_config: command not found
    /bin/sh: mariadb_config: command not found
    /bin/sh: mysql_config: command not found
    Traceback (most recent call last):
      File "", line 1, in <module>
      File "/tmp/pip-install-n39j9wjd/mysqlclient/setup.py", line 15, in <module>
        metadata, options = get_config()
      File "/tmp/pip-install-n39j9wjd/mysqlclient/setup_posix.py", line 65, in get_config
        libs = mysql_config("libs")
      File "/tmp/pip-install-n39j9wjd/mysqlclient/setup_posix.py", line 31, in mysql_config
        raise OSError("{} not found".format(_mysql_config_path))
    OSError: mysql_config not found
    ----------------------------------------
ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.

解决办法：
在Dockerfile中添加以下方法：

# 备份原始的 sources.list 文件
RUN cp /etc/apt/sources.list /etc/apt/sources.list.bak
# 使用 sed 命令替换为国内镜像源
RUN sed -i 's/deb.debian.org/mirrors.tuna.tsinghua.edu.cn/g' /etc/apt/sources.list
# 更新软件源，安装依赖
RUN apt-get update
RUN apt-get install -y libmariadb-dev gcc