安装/移除Docker镜像

确认可使用的Docker镜像。

搜索可安装的映像
官方映像搜索网站
$ docker 搜索 XXX

$ sudo docker search centos
NAME                                         DESCRIPTION                                     STARS     OFFICIAL   AUTOMATED
centos                                       The official build of CentOS.                   7243      [OK]       
kasmweb/centos-7-desktop                     CentOS 7 desktop for Kasm Workspaces            21                   
continuumio/centos5_gcc5_base                                                                3                    
dokken/centos-7                              CentOS 7 image for kitchen-dokken               2                    
dokken/centos-stream-9                                                                       1                    
couchbase/centos7-systemd                    centos7-systemd images with additional debug…   1                    [OK]
spack/centos7                                CentOS 7 with Spack preinstalled                1                    
datadog/centos-i386                                                                          0                    
dokken/centos-8                              CentOS 8 image for kitchen-dokken               0                    
dokken/centos-6                              CentOS 6 image for kitchen-dokken               0                    

2. 下载Docker镜像

拉取镜像 XXX

$ sudo docker pull centos
Using default tag: latest
latest: Pulling from library/centos
a1d0c7532777: Pull complete 
Digest: sha256:a27fd8080b517143cbbbab9dfb7c8571c40d67d534bbdee55bd6c473f432b177
Status: Downloaded newer image for centos:latest
docker.io/library/centos:latest

确认Docker镜像。

列出Docker镜像。

$ sudo docker image ls
REPOSITORY   TAG       IMAGE ID       CREATED         SIZE
centos       latest    5d0da3dc9764   10 months ago   231MB

删除Docker镜像

删除Docker镜像XXX。

$ sudo docker image rm -f centos
Untagged: centos:latest
Untagged: centos@sha256:a27fd8080b517143cbbbab9dfb7c8571c40d67d534bbdee55bd6c473f432b177
Deleted: sha256:5d0da3dc976460b72c77d94c8a1ad043720b0416bfc16c52c45d4847e53fadb6