查看容器的挂载路径：
docker inspect wordpress | grep Mounts -A 10看到类似：
"Mounts": [
{
"Type": "volume",
"Name": "wordpress_data",
"Source": "/var/lib/docker/volumes/wordpress_data/_data",
"Destination": "/var/www/html",
...
}
]然后可以在宿主机上进入这个路径直接操作文件：
cd /var/lib/docker/volumes/wordpress_data/_data