将IP和MAC写入环境变量

# 宿主机.bashrc文件
export ip_address=$(ifconfig | grep 'inet .*br' | sed -E 's/.*inet (.*) netmask.*/\1/')
export mac_address=$(ifconfig eth0 | grep ether | grep -oE "[a-fA-F0-9:]{17}")

docker compose读取环境变量并传入容器

version: "3.8"
services:
    unicom_etl:
        image: unicom_etl:1.5
        build: .
        container_name: unicom_etl_1.5
        environment:
            - mac_address=${mac_address}
        volumes:
            - log:/vol
            - ./:/app
        restart: always

容器内获取环境变量

import os
os.environ.get('mac_address')

参考：
https://www.04007.cn/article/1147.html
https://github.com/docker/compose/issues/4081#issuecomment-416165383