docker system prune

清理结果如下

docker system prune
WARNING! This will remove:
  - all stopped containers
  - all networks not used by at least one container
  - all dangling images
  - all dangling build cache
Are you sure you want to continue? [y/N] 

Total reclaimed space: 22.15GB

du -sh ~/Library/Containers/com.docker.docker/Data

还有20个 G，清理了不少，你也可以按以下步骤挨个清理

docker container prune
docker container prune --filter "until=24h"

docker image prune
docker image prune -a --filter "until=24h"

docker volume prune