使用dockers安装时，如何在apache superset中添加mysql驱动包？

version: '3'
services:
  superset:
    image: apache/superset
    environment:
      - SUPERSET_LOAD_EXAMPLES=yes
      - SUPERSET_ADDITIONAL_MIDDLEWARE=superset.docker_patch:PathFixerMiddleware
    ports:
      - '8088:8088'
    volumes:
      - './superset:/home/superset'
    command: >
      bash -c "superset db upgrade && superset init && superset run -p 8088 --with-threads --reload --debugger"

mysqlclient

docker-compose up -d

docker-compose exec superset bash

pip install -r /home/superset/requirements.txt

exit

docker-compose restart superset