您似乎缺少 MySQLdb Python 模块，您应该为该模块安装 mysqlclient Python包:pip install mysqlclient.

It seems you're missing the MySQLdb Python module, for which you should install the mysqlclient Python package: pip install mysqlclient.

在 Alpine 上，pip 将从源代码构建 mysqlclient，因此您需要 gcc 和 musl-dev 用于此设置步骤，因此你需要将 apk del build-deps 推迟到 Python 模块安装之后.

On Alpine, pip will build mysqlclient from source, so you'll need gcc and musl-dev for this setup step, hence you'll need to postpone apk del build-deps to after Python modules are installed.

固定的 Dockerfile 片段:

Fixed Dockerfile snippet:

RUN apk update 
    && apk add --virtual build-deps gcc python3-dev musl-dev 
    && apk add --no-cache mariadb-dev

...

RUN pip install mysqlclient  

RUN apk del build-deps