Error response from daemon: conflict: unable to remove repository reference xxx

Error：

想删除centos镜像，因为docker images 里面有两个centos，所以删除其中一个。

[root@jdcloud3 ~]# docker rmi centos:latest
Error response from daemon: conflict: unable to remove repository 
reference "centos:latest" (must force) 
- container b78aedf3926a is using its referenced image 0f3e07c0138f

Solution：

出现这个问题是因为多个容器占用同一个镜像的问题，请重复删除即可。

centos 这个镜像删不了 是它在多个容器里在跑  一 一 remove掉

然后回来再去删除容器依赖的原镜像

[root@jdcloud3 ~]# docker rm b78aedf3926a
b78aedf3926a
[root@jdcloud3 ~]# docker rmi centos:latest
Untagged: centos:latest
Untagged: centos@sha256:f94c1d992c193b3dc09e297ffd54d8a4f1dc946c37cbeceb26d35ce1647f88d9
Deleted: sha256:0f3e07c0138fbe05abcb7a9cc7d63d9bd4c980c3f61fea5efa32e7c4217ef4da
Deleted: sha256:9e607bb861a7d58bece26dd2c02874beedd6a097c1b6eca5255d5eb0d2236983
[root@jdcloud3 ~]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
zookeeper           latest              611ffeaf5959        2 days ago          224MB
redis               latest              dcf9ec9265e0        11 days ago         98.2MB
python              latest              0a3a95c81a2b        12 days ago         932MB
mysql               latest              d435eee2caa5        12 days ago         456MB
                            e9ee535ba1b1        2 weeks ago         491MB
docker              latest              52f7c6fb16b9        2 weeks ago         216MB
centos              centos7             5e35e350aded        3 weeks ago         203MB
openjdk             8-jdk-alpine        a3562aa0b991        6 months ago        105MB
hello-world         latest              fce289e99eb9        11 months ago       1.84kB
[root@jdcloud3 ~]# 

PS:

镜像和容器就像是面向对象程序设计中的类和实例一样，镜像是静态的定义，容器是镜像运行时的实体。

你想删除某个镜像但是有多个容器依赖于这个镜像在running。