• 本文讲解 Docker 镜像操作的常用指令
• docker Hub 官网：https://hub.docker.com/

image

镜像操作

检索云端镜像

-使用 指令 docker search 关键字 可以检索 (搜索) Docker Hub 官网上提供的所有镜像，之后我们就可以下载需要的镜像
-检索 " mysql "：[root@localhost ~]# docker search mysql
-检索 " redis "：[root@localhost ~]# docker search redis

[root@localhost ~]# docker search mysql
INDEX       NAME                                                             DESCRIPTION                                     STARS     OFFICIAL   AUTOMATED
docker.io   docker.io/mysql                                                  MySQL is a widely used, open-source relati...   6728      [OK]       
docker.io   docker.io/mariadb                                                MariaDB is a community-developed fork of M...   2141      [OK]       
docker.io   docker.io/mysql/mysql-server                                     Optimized MySQL Server Docker images. Crea...   495                  [OK]
docker.io   docker.io/percona                                                Percona Server is a fork of the MySQL rela...   360       [OK]       
docker.io   docker.io/zabbix/zabbix-server-mysql                             Zabbix Server with MySQL database support       114                  [OK]
docker.io   docker.io/hypriot/rpi-mysql                                      RPi-compatible Docker Image with Mysql          93                   
docker.io   docker.io/zabbix/zabbix-web-nginx-mysql                          Zabbix frontend based on Nginx web-server ...   62                   [OK]
docker.io   docker.io/centurylink/mysql                                      Image containing mysql. Optimized to be li...   60                   [OK]
docker.io   docker.io/1and1internet/ubuntu-16-nginx-php-phpmyadmin-mysql-5   ubuntu-16-nginx-php-phpmyadmin-mysql-5          43                   [OK]
docker.io   docker.io/centos/mysql-57-centos7                                MySQL 5.7 SQL database server                   35                   
docker.io   docker.io/mysql/mysql-cluster                                    Experimental MySQL Cluster Docker images. ...   33                   
docker.io   docker.io/tutum/mysql                                            Base docker image to run a MySQL database ...   32                   
docker.io   docker.io/schickling/mysql-backup-s3                             Backup MySQL to S3 (supports periodic back...   20                   [OK]
docker.io   docker.io/bitnami/mysql                                          Bitnami MySQL Docker Image                      16                   [OK]
docker.io   docker.io/zabbix/zabbix-proxy-mysql                              Zabbix proxy with MySQL database support        15                   [OK]
docker.io   docker.io/linuxserver/mysql                                      A Mysql container, brought to you by Linux...   14                   
docker.io   docker.io/centos/mysql-56-centos7                                MySQL 5.6 SQL database server                   9                    
docker.io   docker.io/circleci/mysql                                         MySQL is a widely used, open-source relati...   6                    
docker.io   docker.io/openshift/mysql-55-centos7                             DEPRECATED: A Centos7 based MySQL v5.5 ima...   6                    
docker.io   docker.io/dsteinkopf/backup-all-mysql                            backup all DBs in a mysql server                4                    [OK]
docker.io   docker.io/mysql/mysql-router                                     MySQL Router provides transparent routing ...   2                    
docker.io   docker.io/openzipkin/zipkin-mysql                                Mirror of https://quay.io/repository/openz...   1                    
docker.io   docker.io/ansibleplaybookbundle/mysql-apb                        An APB which deploys RHSCL MySQL                0                    [OK]
docker.io   docker.io/cloudfoundry/cf-mysql-ci                               Image used in CI of cf-mysql-release            0                    
docker.io   docker.io/cloudposse/mysql                                       Improved `mysql` service with support for ...   0                    [OK]
[root@localhost ~]# 

INDEX：索引
NAME：镜像名称
DESCRIPTION：描述
STARS：关注人数，单位为 k
OFFICIAL：是否为官方发布)，[ok] 则表示此版本为官方发行版本
AUTOMATED：是否自动配置，[ok] 则表示镜像已经自动配置好了，获取就能直接使用，否则需要自己手动配置

• 如上所示所有的搜索结果其实都是从 Docker Hub 上获取来的，所以我们自己也可以官网上直接查找

  image

下载镜像

• 使用命令：docker pull 镜像名:tag，可以从 Docker Hub 下载指定的镜像，“ :tag ” 不写时默认下载最新版本的镜像，也可以自己指定 tag 从而下载指定版本的镜像，tag 名称可以从 Docker Hub 上自己查看

  image

[root@localhost ~]# docker search mysql
INDEX       NAME                                                             DESCRIPTION                                     STARS     OFFICIAL   AUTOMATED
docker.io   docker.io/mysql                                                  MySQL is a widely used, open-source relati...   6728      [OK]       
docker.io   docker.io/mariadb                                                MariaDB is a community-developed fork of M...   2141      [OK]       
docker.io   docker.io/mysql/mysql-server                                     Optimized MySQL Server Docker images. Crea...   495                  [OK]
.......

• 下载上面 NAME 为 docker.io/msql 镜像为例，使用 " docker pull mysql "即可下载， 前面的 " docker.io/" 可写可不写
• 如下所示没有提供 "tag" 时， “Using default tag: latest” 表示默认使用 "latest" 版本
• 下载成功之后，可以使用 " docker images " 查看本地下载好的所有镜像

[root@localhost ~]# docker pull mysql
Using default tag: latest
Trying to pull repository docker.io/library/mysql ... 
latest: Pulling from docker.io/library/mysql
be8881be8156: Pull complete 
c3995dabd1d7: Pull complete 
9931fdda3586: Pull complete 
bb1b6b6eff6a: Pull complete 
a65f125fa718: Pull complete 
2d9f8dd09be2: Pull complete 
37b912cb2afe: Pull complete 
54242fcd8eaa: Pull complete 
0a9d4d211511: Pull complete 
270ae5bd02c2: Pull complete 
9b55b8e72e70: Pull complete 
68083f7985cd: Pull complete 
Digest: sha256:d39a8ab7679df309e7eff6ddba434ad5747cc2a2acee2d7c60d8221c9acedcad
Status: Downloaded newer image for docker.io/mysql:latest
[root@localhost ~]# 

如下所示下载的是 docker.io/mysql 5.7 版本的镜像

[root@localhost ~]# docker pull mysql:5.7
Trying to pull repository docker.io/library/mysql ... 
5.7: Pulling from docker.io/library/mysql
be8881be8156: Already exists 
c3995dabd1d7: Already exists 
9931fdda3586: Already exists 
bb1b6b6eff6a: Already exists 
a65f125fa718: Already exists 
2d9f8dd09be2: Already exists 
37b912cb2afe: Already exists 
faf9da46e0cf: Pull complete 
ffcedc9e8600: Pull complete 
6e11f2447e86: Pull complete 
02243b284270: Pull complete 
Digest: sha256:e25e2768e910223db3095c1560aa2255371986b24fbebf4b015bae3cc60b9b34
Status: Downloaded newer image for docker.io/mysql:5.7
[root@localhost ~]# 

查看本地镜像

使用命令 docker images 查看本地下载好的所有镜像

[root@localhost ~]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
docker.io/mysql     5.7                 43b029b6b640        22 hours ago        372 MB
docker.io/mysql     latest              29e0ae3b69b9        22 hours ago        484 MB
[root@localhost ~]# 

REPOSITORY ：仓库，即下载的镜像名称

TAG：标识，通常为版本号

IMAGE ID：镜像id，删除时根据镜像id进行删除

CRREATED：镜像创建时间

SIZE：镜像大小

删除镜像

使用 docker rmi image-id 命令删除指定的本地镜像

[root@localhost ~]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
docker.io/mysql     5.7                 43b029b6b640        22 hours ago        372 MB
docker.io/mysql     latest              29e0ae3b69b9        22 hours ago        484 MB
[root@localhost ~]# docker rmi 43b029b6b640
Untagged: docker.io/mysql:5.7
Untagged: docker.io/mysql@sha256:e25e2768e910223db3095c1560aa2255371986b24fbebf4b015bae3cc60b9b34
Deleted: sha256:43b029b6b6406b40f1ba51b069980b5c14b701786830a41ebb489ad3bbf3d928
Deleted: sha256:e8793f33a59faabf48ec2b41dff592700651385fc2d0e4ddc2f7a6efbd0c03c3
Deleted: sha256:06f716d6d745ca2ab39f21f40ba757cbbd93b6189ca47030f4888442b9c2f9ca
Deleted: sha256:0c7d7ee852d955b7ec7353dc367b26ee59c029243e631fc31a53847bffe1852b
Deleted: sha256:35c70a35928fd6ce30c1495b9782b53b69fe0d023c35ad047072e4d7d388a753
[root@localhost ~]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
docker.io/mysql     latest              29e0ae3b69b9        22 hours ago        484 MB
[root@localhost ~]# docker rmi 29e0ae3b69b9
Untagged: docker.io/mysql:latest
Untagged: docker.io/mysql@sha256:d39a8ab7679df309e7eff6ddba434ad5747cc2a2acee2d7c60d8221c9acedcad
Deleted: sha256:29e0ae3b69b9031ab7d7fd3024057b9441d74c8244e583cfb48697109148ca71
Deleted: sha256:e510a8f0a60462d0280381e93018635f8986c308550dabce0be5249c3402c338
Deleted: sha256:7360cba3164f094ead4b968263cabeed376e7306ca6415c824d63ff7d2c22203
Deleted: sha256:e26ff419bf2626b93431acf08fc734cb88eed5dea413bd05965ba1c51dc9c671
Deleted: sha256:5b9acfeae5767ffb16ef495d68de01b750ac5efcf2af474d695b1fead7c2dabc
Deleted: sha256:3f55b1f8de59e6ba35f38376b4a7ee48ffbb32f23500d16400a18c6d59ad1803
Deleted: sha256:d8a947a6bf007b7b3f857fd157092aa938cc01780175eda5c300847f2758ba6f
Deleted: sha256:424c40c7a715a28330453b0ec3b5afc97caa851a56d365c65a97b583b733b81b
Deleted: sha256:202db300227b8c870b421aa0a0a11b44cb916401ef3a34bcc2a5efcb30a3ea78
Deleted: sha256:20f3dff2c1b6f8409b53e4e203132f7ebb2dfd7dc612d87e4a93302a5a8f5c1a
Deleted: sha256:3131a4917b53634699929d8ff7e2b2bd9469f3f5ab08daf41d1c6b90e0f18b44
Deleted: sha256:9996a15396359708cb2177cfdbe8fcb9f65124142edb9b1d3550f3eb87360676
Deleted: sha256:cdb3f9544e4c61d45da1ea44f7d92386639a052c620d1550376f22f5b46981af
[root@localhost ~]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE