仓库命令

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docker login [仓库host:port]                         #登录仓库,dockerhub可以不写[仓库host:port] 
docker logout [仓库host:port]                        #登出仓库,dockerhub可以不写[仓库host:port] 
docker search imageName         		            #搜索镜像
docker tag sourceImage[:tag] targetImage[:tag]      #给镜像打标签
docker pull   imageName[:tag]                       #下载镜像,不加tag就是latest
docker push   imageName[:tag]                       #推送镜像到仓库

docker login（登录仓库）

只有dockerhub的[仓库host:port]（index.docker.io）是可以省略的，其他私有仓库必须写上。

登录信息可以在文件中查看/root/.docker/config.json。

  • 私有仓库登录后能上传拉取，不登录不能上传拉取。

  • 公有仓库，登录可以上传拉取，不登录只能拉取不能上传。

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[root@localhost ~]# docker login --help

Usage:  docker login [OPTIONS] [SERVER]

Log in to a Docker registry.
If no server is specified, the default is defined by the daemon.

Options:
  -p, --password string   Password
      --password-stdin    Take the password from stdin
  -u, --username string   Username
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[root@localhost ~]# docker login
Login with your Docker ID to push and pull images from Docker Hub. If you don't have a Docker ID, head over to https://hub.docker.com to create one.
Username: test
Password: 
WARNING! Your password will be stored unencrypted in /root/.docker/config.json.
Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-store

Login Succeeded

[root@localhost ~]# cat /root/.docker/config.json
{
        "auths": {
                "https://index.docker.io/v1/": {
                        "auth": "xpeW91QGRvY2tlckBxNTkuY29tYmx1ZWN1c2xpeW91Om"
                }
        }
}

docker logout(登出仓库)

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[root@blueculiyou ~]# docker logout --help

Usage:  docker logout [SERVER]

Log out from a Docker registry.
If no server is specified, the default is defined by the daemon.
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[root@localhost ~]# docker logout
Removing login credentials for https://index.docker.io/v1/

docker search(查找镜像)

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[root@localhost ~]# docker search --help

Usage:  docker search [OPTIONS] TERM

Search the Docker Hub for images

Options:
  -f, --filter filter   Filter output based on conditions provided
      --format string   Pretty-print search using a Go template
      --limit int       Max number of search results (default 25)
      --no-trunc        Don't truncate output
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# 显示前5条匹配项镜像
[root@localhost ~]# docker search --limit 5 mysql
NAME                              DESCRIPTION                                     STARS     OFFICIAL   AUTOMATED
mysql                             MySQL is a widely used, open-source relation…   11753     [OK]       
mysql/mysql-server                Optimized MySQL Server Docker images. Create…   878                  [OK]
mysql/mysql-cluster               Experimental MySQL Cluster Docker images. Cr…   89                   
schickling/mysql-backup-s3        Backup MySQL to S3 (supports periodic backup…   31                   [OK]
ansibleplaybookbundle/mysql-apb   An APB which deploys RHSCL MySQL                3                    [OK]

#搜索STARS > 800 以上的镜像
[root@localhost ~]# docker search --filter=STARS=800 mysql
NAME                 DESCRIPTION                                     STARS     OFFICIAL   AUTOMATED
mysql                MySQL is a widely used, open-source relation…   11753     [OK]       
mariadb              MariaDB Server is a high performing open sou…   4482      [OK]       
mysql/mysql-server   Optimized MySQL Server Docker images. Create…   878                  [OK]

docker tag(给镜像打标签)

打标签主要是让镜像可以上传不同仓库用的

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[root@localhost ~]# docker tag --help

Usage:  docker tag SOURCE_IMAGE[:TAG] TARGET_IMAGE[:TAG]

Create a tag TARGET_IMAGE that refers to SOURCE_IMAGE
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#打完标签的新的镜像还是指向原来的镜像的
[root@localhost ~]# docker tag nginx mynginx
[root@localhost ~]# docker images
REPOSITORY   TAG       IMAGE ID       CREATED              SIZE
mycentos     latest    350c302fa1db   About a minute ago   326MB
nginx        latest    605c77e624dd   2 weeks ago          141MB
mynginx      latest    605c77e624dd   2 weeks ago          141MB
centos       latest    5d0da3dc9764   4 months ago         231MB

docker pull(拉取镜像)

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[root@localhost ~]# docker pull --help

Usage:  docker pull [OPTIONS] NAME[:TAG|@DIGEST]

Pull an image or a repository from a registry

Options:
  -a, --all-tags                Download all tagged images in the repository
      --disable-content-trust   Skip image verification (default true)
      --platform string         Set platform if server is multi-platform capable
  -q, --quiet                   Suppress verbose output
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#如果不写tag，默认就是latest
[root@localhost ~]# docker pull redis
Using default tag: latest
latest: Pulling from library/redis

#分层下载： docker image 的核心 联合文件系统
eff15d958d66: Pull complete 
1aca8391092b: Pull complete 
06e460b3ba1b: Pull complete 
def49df025c0: Pull complete 
646c72a19e83: Pull complete 
db2c789841df: Pull complete 

# 签名 防伪
Digest: sha256:619af14d3a95c30759a1978da1b2ce375504f1af70ff9eea2a8e35febc45d747
Status: Downloaded newer image for redis:latest

#真实地址  docker pull redis等价于  docker pull docker.io/library/redis:latest
docker.io/library/redis:latest

#下载镜像 带版本号
[root@localhost ~]# docker pull redis:6
6: Pulling from library/redis
Digest: sha256:619af14d3a95c30759a1978da1b2ce375504f1af70ff9eea2a8e35febc45d747
Status: Downloaded newer image for redis:6
docker.io/library/redis:6

docker push(上传镜像到仓库)

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[root@localhost ~]# docker push --help

Usage:  docker push [OPTIONS] NAME[:TAG]

Push an image or a repository to a registry

Options:
  -a, --all-tags                Push all tagged images in the repository
      --disable-content-trust   Skip image signing (default true)
  -q, --quiet                   Suppress verbose output
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[root@localhost ~]# docker tag nginx localhost/mynginx:0.1

[root@localhost ~]# docker push localhost/mynginx:0.1
The push refers to repository [docker.io/localhost/mynginx]
d874fd2bc83b: Mounted from library/nginx 
32ce5f6a5106: Mounted from library/nginx 
f1db227348d0: Mounted from library/nginx 
b8d6e692a25e: Mounted from library/nginx 
e379e8aedd4d: Mounted from library/nginx 
2edcec3590a4: Mounted from localhost/myredis 
0.1: digest: sha256:ee89b00528ff4f02f2405e4ee221743ebc3f8e8dd0bfd5c4c20a2fa2aaa7ede3 size: 1570