1.打开docker的设置，点击Docker Engine

2.添加国内的镜像源，将下面的内容加进去

"registry-mirrors": [
        "https://docker.mirrors.ustc.edu.cn",
        "https://registry.docker-cn.com",
        "http://hub-mirror.c.163.com",
        "https://mirror.ccs.tencentyun.com"
    ]

3.重启docker