docker image刪不掉的問題

root@ubuntu:/opt/docker# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
door/ubuntu-nginx   v2                  5e4f2da203e2        5 minutes ago       283.3 MB
<none>              <none>              46987ed2da40        33 minutes ago      129 MB
<none>              <none>              20248c31e1a2        45 minutes ago      129 MB
door/ubuntu-nginx   v1                  0e35a55569f5        About an hour ago   280.8 MB
ubuntu              latest              104bec311bcd        2 weeks ago         129 MB
hello-world         latest              c54a2cc56cbb        6 months ago        1.848 kB
root@ubuntu:/opt/docker# docker rmi 5e4f2da203e2
Error response from daemon: conflict: unable to delete 5e4f2da203e2 (must be forced) - image is being used by stopped container 06622513ce3c

解決方法：

1. 先查詢記錄 docker ps -a
2. 把該鏡像的記錄所有刪除掉，若是刪除全部鏡像的記錄，可使用:docker ps -a|awk '{print $1}'|xargs docker rm
3. docker rmi 5e4f2da203e2就能夠了