View the space occupied by docker

View the total space occupied by docker

First df -h to see the docker directory.

 To check the size of this directory and get the total disk space used by Docker, execute:

sudo du -sh /var/lib/docker_data
4.1T	/var/lib/docker_data

View the details of the space occupied by docker

总的：
docker system df
详细的：
docker system df -v

View the space occupied by the docker image

docker images

Check running container size

docker ps --size

注意：虚拟大小（virtual）包括共享的底层镜像。

Disk usage of a specific docker container

docker inspect 容器名称