05、镜像操作

1、搜索官方仓库镜像

[root@hackerlin ~]# docker search nginx
INDEX       NAME                                         DESCRIPTION                                     STARS     OFFICIAL   AUTOMATED
docker.io   docker.io/nginx                              Official build of Nginx.                        12953     [OK]       
docker.io   docker.io/jwilder/nginx-proxy                Automated Nginx reverse proxy for docker c...   1769                 [OK]
docker.io   docker.io/richarvey/nginx-php-fpm            Container running Nginx + PHP-FPM capable ...   764                  [OK]
docker.io   docker.io/linuxserver/nginx                  An Nginx container, brought to you by Linu...   102                  
docker.io   docker.io/bitnami/nginx                      Bitnami nginx Docker Image                      82                   [OK]
docker.io   docker.io/tiangolo/nginx-rtmp                Docker image with Nginx using the nginx-rt...   67                   [OK]

搜索结果解释：

name　　　　镜像名称

DESCRIPTION　　　　镜像说明

STARS　　　　点赞数量

OFFICIAL　　 是否是官方的

AUTOMATED　　是否是自动构建的

2、镜像拉取

根据镜像名称（tag指定版本）拉取镜像

[root@hackerlin ~]# docker pull nginx:1.14-alpine
Trying to pull repository docker.io/library/nginx ... 
1.14-alpine: Pulling from docker.io/library/nginx
bdf0201b3a05: Pull complete 
3d0a573c81ed: Pull complete 
8129faeb2eb6: Pull complete 
3dc99f571daf: Pull complete 
Digest: sha256:485b610fefec7ff6c463ced9623314a04ed67e3945b9c08d7e53a47f6d108dc7
Status: Downloaded newer image for docker.io/nginx:1.14-alpine

注：alpine版本：构建容器小镜像的发型版本

3、查看当前主机镜像列表

[root@hackerlin ~]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
docker.io/busybox   latest              83aa35aa1c79        4 weeks ago         1.22 MB
docker.io/nginx     1.14-alpine         8a2fb25a19f5        12 months ago       16 MB

4、导出镜像

[root@hackerlin ~]# docker image save busybox>docker-busybox.tar.gz
[root@hackerlin ~]# ls docker-busybox.tar.gz 
docker-busybox.tar.gz
[root@hackerlin ~]# docker image save -o /usr/local/src/nginx.1.14.tar.gz docker.io/busybox:latest docker.io/nginx:1.14-alpine
[root@hackerlin ~]# ll /usr/local/src/nginx.1.14.tar.gz 
-rw-------. 1 root root 18702336 Apr 10 01:59 /usr/local/src/nginx.1.14.tar.gz

注：

　　-o 　　指定导出镜像的位置

　　可以同时导出多个镜像为一个文件

　　指定.tar.gz可以导出并压缩

5、镜像删除

[root@hackerlin ~]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
docker.io/busybox   latest              83aa35aa1c79        4 weeks ago         1.22 MB
docker.io/nginx     1.14-alpine         8a2fb25a19f5        12 months ago       16 MB
[root@hackerlin ~]# docker image rm busybox
Untagged: busybox:latest
Untagged: docker.io/busybox@sha256:b26cd013274a657b86e706210ddd5cc1f82f50155791199d29b9e86e935ce135
Deleted: sha256:83aa35aa1c79e4b6957e018da6e322bfca92bf3b4696a211b42502543c242d6f
Deleted: sha256:a6d503001157aedc826853f9b67f26d35966221b158bff03849868ae4a821116
[root@hackerlin ~]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
docker.io/nginx     1.14-alpine         8a2fb25a19f5        12 months ago       16 MB

6、镜像导入

[root@hackerlin ~]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
docker.io/nginx     1.14-alpine         8a2fb25a19f5        12 months ago       16 MB
[root@hackerlin ~]# docker image load -i docker-busybox.tar.gz 
a6d503001157: Loading layer [==================================================>] 1.437 MB/1.437 MB
Loaded image: docker.io/busybox:latest
[root@hackerlin ~]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
docker.io/busybox   latest              83aa35aa1c79        4 weeks ago         1.22 MB
docker.io/nginx     1.14-alpine         8a2fb25a19f5        12 months ago       16 MB

7、查看镜像详细信息

[root@hackerlin ~]# docker inspect docker.io/nginx:1.14-alpine