/ var/lib/docker/overlay2 takes up a lot of space, how to deal with it?

sudo du -ah --max-depth=1 /var/lib/docker

4.0K    /var/lib/docker/runtimes
4.0K    /var/lib/docker/swarm
3.0G    /var/lib/docker/containers
520K    /var/lib/docker/containerd
4.0K    /var/lib/docker/trust
104K    /var/lib/docker/network
9.6M    /var/lib/docker/image
20K    /var/lib/docker/plugins
867M    /var/lib/docker/volumes
6.7G    /var/lib/docker/overlay2
4.0K    /var/lib/docker/tmp
20K    /var/lib/docker/builder
72K    /var/lib/docker/buildkit
11G    /var/lib/docker

sudo docker system df

TYPE                TOTAL               ACTIVE              SIZE                RECLAIMABLE
Images              10                  10                  3.035GB             115MB (3%)
Containers          10                  10                  211.9MB             0B (0%)
Local Volumes       27                  2                   906.8MB             866.4MB (95%)
Build Cache         0                   0                   0B                  0B

/ var/lib/docker/overlay2 takes up a lot of space, and the vps space is limited. How to deal with this situation?

Dec.14,2021

docker system df-v view larger images. If you have images that don't need to be used, you can consider deleting free space.

For more information, please see this blog:
https://yq.aliyun.com/article.

.
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1eb6c85-483d9.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1eb6c85-483d9.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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