镜像（一）

查询本地主机上的镜像

docker images
OPTIONS说明：

    • a 列出本地所有的镜像（含历史镜像）
    • q 只显示镜像ID

举个栗子

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[root@iZ8vbfaek3x3ogtpxnpnwfZ /]# docker images
REPOSITORY    TAG       IMAGE ID       CREATED        SIZE
tomcat        9.0       b8e65a4d736d   4 months ago   680MB
tomcat        latest    fb5657adc892   4 months ago   680MB
hello-world   latest    feb5d9fea6a5   7 months ago   13.3kB
centos        latest    5d0da3dc9764   7 months ago   231MB
ubuntu        15.10     9b9cb95443b5   5 years ago    137MB
[root@iZ8vbfaek3x3ogtpxnpnwfZ /]#
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[root@iZ8vbfaek3x3ogtpxnpnwfZ /]# docker images -a
REPOSITORY    TAG       IMAGE ID       CREATED        SIZE
tomcat        9.0       b8e65a4d736d   4 months ago   680MB
tomcat        latest    fb5657adc892   4 months ago   680MB
hello-world   latest    feb5d9fea6a5   7 months ago   13.3kB
centos        latest    5d0da3dc9764   7 months ago   231MB
ubuntu        15.10     9b9cb95443b5   5 years ago    137MB
[root@iZ8vbfaek3x3ogtpxnpnwfZ /]#
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[root@iZ8vbfaek3x3ogtpxnpnwfZ /]# docker images -q
b8e65a4d736d
fb5657adc892
feb5d9fea6a5
5d0da3dc9764
9b9cb95443b5
[root@iZ8vbfaek3x3ogtpxnpnwfZ /]#

查询镜像仓库是否有该镜像

docker search 镜像名称

举个栗子

STARS 点赞数
OFFICIAL 官方认证

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[root@iZ8vbfaek3x3ogtpxnpnwfZ /]# docker search hello-world
NAME                                       DESCRIPTION                                     STARS     OFFICIAL               AUTOMATED
hello-world                                Hello World! (an example of minimal Dockeriz…   1718      [OK]                 
kitematic/hello-world-nginx                A light-weight nginx container that demonstr…   151

显示前n条镜像

docker search —limit n 镜像名称

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[root@iZ8vbfaek3x3ogtpxnpnwfZ ~]# docker search --limit 5 redis
NAME                     DESCRIPTION                                     STARS     OFFICIAL   AUTOMATED
redis                    Redis is an open source key-value store that…   10851     [OK]
bitnami/redis            Bitnami Redis Docker Image                      214                  [OK]
bitnami/redis-sentinel   Bitnami Docker Image for Redis Sentinel         36                   [OK]
circleci/redis           CircleCI images for Redis                       12                   [OK]
bitnami/redis-exporter                                                   6
[root@iZ8vbfaek3x3ogtpxnpnwfZ ~]#

下载安装镜像到本地

docker pull 镜像名称：标签版本号

没有tag就是最新版

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[root@iZ8vbfaek3x3ogtpxnpnwfZ ~]# docker pull redis:6.0.8
6.0.8: Pulling from library/redis
bb79b6b2107f: Pull complete
1ed3521a5dcb: Pull complete
5999b99cee8f: Pull complete
3f806f5245c9: Pull complete
f8a4497572b2: Pull complete
eafe3b6b8d06: Pull complete
Digest: sha256:21db12e5ab3cc343e9376d655e8eabbdbe5516801373e95a8a9e66010c5b8819
Status: Downloaded newer image for redis:6.0.8
docker.io/library/redis:6.0.8
[root@iZ8vbfaek3x3ogtpxnpnwfZ ~]#