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1.docker中删除images的命令是docker rmi，但有时候执行此命令并不能删除images

[xiaolh@ly ~]$docker ps -aCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES117843ade696 ed9c93747fe1 /bin/sh -c /usr/sbin 46 hours ago Up 46 hours 0.0.0.0:49153->22/tcp test_sshd

可以看出ed9c93747fe1的image被117843ade696的container使用着，所以必须首先删除该container

2.删除容器 docker rm u_id

[xiaolh@ly ~]$docker rm 117843ade696Error: container_delete: Impossible to remove a running container, please stop it first2014/03/22 16:36:44 Error: failed to remove one or more containers

出现错误，这是因为该container正在运行中(运行docker ps查看)，先将其关闭

3.停止正在运行的镜像

[xiaolh@ly ~]$docker stop 117843ade696117843ade696

4.删除镜像

[xiaolh@ly ~]$docker rm 117843ade696117843ade696[xiaolh@ly ~]$docker rmi ed9c93747fe1Deleted: ed9c93747fe16627be822ad3f7feeb8b4468200e5357877d3046aa83cc44c6afDeleted: c8a0c19429daf73074040a14e527ad5734e70363c644f18c6815388b63eedc9bDeleted: 95dba4c468f0e53e5f1e5d76b8581d6740aab9f59141f783f8e263ccd7cf2a8eDeleted: c25dc743e40af6858c34375d450851bd606a70ace5d04e231a7fcc6d2ea23cc1Deleted: 20562f5714a5ce764845119399ef75e652e23135cd5c54265ff8218b61ccbd33Deleted: c8af1dc23af7a7aea0c25ba9b28bdee68caa8866f056e4f2aa2a5fa1bcb12693Deleted: 38fdb2c5432e08ec6121f8dbb17e1fde17d5db4c1f149a9b702785dbf7b0f3beDeleted: 79ca14274c80ac1df1333b89b2a41c0e0e3b91cd1b267b31bef852ceab3b2044[xiaolh@ly ~]$docker imagesREPOSITORY          TAG                 IMAGE ID            CREATED             VIRTUAL SIZE

可以看出，image已经被删除。