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解决docker image has dependent child images 错误
source link: https://www.ishells.cn/archives/solve-docker-rm-image-error
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问题描述：
在Docker中删除images有时会遇到类似的报错：
Error response from daemon: conflict: unable to delete 6ec9a5a0fc9f (cannot be forced) - image has dependent child images这样的错误，原因是有另外的 image FROM 了这个 image，可以使用下面的命令列出所有在指定 image 之后创建的 image 的父 image
docker image inspect --format='{{.RepoTags}} {{.Id}} {{.Parent}}' $(docker image ls -q --filter since=xxxxxx) # 其中 xxxxxx 是报错 image 的 id，在文章开头的例子中就是 6ec9a5a0fc9f。从列表中查找到之后就可以核对并删除这些 image查找出所有在指定 image 之后创建的 image 的父 image,删除关联的依赖镜像，关联的none镜像也会被删除
# 停止所有容器docker ps -a | grep "Exited" | awk '{print $1 }'|xargs docker stop # 删除所有容器docker ps -a | grep "Exited" | awk '{print $1 }'|xargs docker rm # 删除所有none容器docker images|grep none|awk '{print $3 }'|xargs docker rmiRecommend
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