镜像无法删除
问题复现
当前的镜像
PS D:\JAVA WORKSPACE\dockerTemp> docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
orderbook latest 6514a4df3367 7 seconds ago 300MB
hub.c.163.com/fjy8018/mysql-orderbooks latest 37a82bac5f71 About an hour ago 407MB
hub.c.163.com/library/tomcat latest 72d2be374029 10 months ago 292MB
hub.c.163.com/library/mysql latest 9e64176cd8a2 14 months ago 407MB
运行一个镜像
PS D:\JAVA WORKSPACE\dockerTemp> docker run -d -p 8888:8080 orderbook:latest
678dcf28c1c3206cd78a824aab51cc5d1f6c333ed85f48d4c364a51526049f20
查看进程，发现进程没有出现（3306是已经启动的MySQL容器），由于容器制作过程出现问题导致进程无法成功启动
PS D:\JAVA WORKSPACE\dockerTemp> docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
43146ddfc771 hub.c.163.com/library/mysql:latest "docker-entrypoint.s…" 2 hours ago Up 2 hours 0.0.0.0:8006->3306/tcp hopeful_euclid
检查镜像
PS D:\JAVA WORKSPACE\dockerTemp> docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
orderbook latest 6514a4df3367 44 seconds ago 300MB
hub.c.163.com/fjy8018/mysql-orderbooks latest 37a82bac5f71 About an hour ago 407MB
hub.c.163.com/library/tomcat latest 72d2be374029 10 months ago 292MB
hub.c.163.com/library/mysql latest 9e64176cd8a2 14 months ago 407MB
删除没有成功运行的镜像报错，报该容器已经被占用
PS D:\JAVA WORKSPACE\dockerTemp> docker rmi 6514a4df3367
Error response from daemon: conflict: unable to delete 6514a4df3367 (must be forced) - image is being used by stopped container 678dcf28c1c3
删除报错中提示的容器ID
PS D:\JAVA WORKSPACE\dockerTemp> docker rmi 678dcf28c1c3
Error: No such image: 678dcf28c1c3
报无该镜像
解决
官方对rm与rmi的解释：
rm Remove one or more containers
rmi Remove one or more images可知rm删除的是容器，rmi删除的是镜像，两者的区别如下：
容器（container）的定义和镜像（image）几乎一模一样，也是一堆层的统一视角，唯一区别在于容器的最上面那一层是可读可写的。
镜像（Image）就是一堆只读层（read-only layer）的统一视角
要点：容器 = 镜像 + 可读层。并且容器的定义并没有提及是否要运行容器。
故对于不在镜像列表的ID，要删除的是容器，使用rm命令
PS D:\JAVA WORKSPACE\dockerTemp> docker rm 678dcf28c1c3
678dcf28c1c3
列出所有的镜像
PS D:\JAVA WORKSPACE\dockerTemp> docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
orderbook latest 6514a4df3367 2 minutes ago 300MB
hub.c.163.com/fjy8018/mysql-orderbooks latest 37a82bac5f71 About an hour ago 407MB
hub.c.163.com/library/tomcat latest 72d2be374029 10 months ago 292MB
hub.c.163.com/library/mysql latest 9e64176cd8a2 14 months ago 407MB
再删除目标镜像
PS D:\JAVA WORKSPACE\dockerTemp> docker rmi 6514a4df3367
Untagged: orderbook:latest
Deleted: sha256:6514a4df33678bd98e32b5738150c88c5d72b9a3a4d86d1c370406f0f7f18788
Deleted: sha256:68a70a0ac20590c8412286b3c34ab2bc5c5b7c8845088536f03702185ac34105
Deleted: sha256:bf15e37a31e4266bc8a962a2b11fc3223c07de328ff85b17c70a15653c71061b
Deleted: sha256:b447a606517609703f1efe4c560c42b9aeeaee669d22f12a65d2d2929d8ecc20
删除成功
PS D:\JAVA WORKSPACE\dockerTemp> docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
hub.c.163.com/fjy8018/mysql-orderbooks latest 37a82bac5f71 About an hour ago 407MB
hub.c.163.com/library/tomcat latest 72d2be374029 10 months ago 292MB
hub.c.163.com/library/mysql latest 9e64176cd8a2 14 months ago 407MB停止并删除所有容器
批处理命令
docker stop $(docker ps -aq)
docker rm $(docker ps -aq)