table of Contents
Basic commands of Docker image
docker images mirroring command
Basic commands of Docker image
Help command
docker version # 显示docker版本信息
docker info # docker的系统信息，包括镜像和容器的数量
docker 命令 --help # 帮助命令- View the help documentation: https://docs.docker.com/engine/reference/run/
docker images mirroring command
- View all mirrors on the local host
docker images [OPTIONS] [REPOSITORY[:TAG]]| Name, shorthand | Description |
--all , -a |
Show all images (default hides intermediate images) |
--digests |
Show digests |
--filter , -f |
Filter output based on conditions provided |
--format |
Pretty-print images using a Go template |
--no-trunc |
Don’t truncate output |
--quiet , -q |
Only show numeric IDs |
- Or use the help command
-a, --all 列出所有镜像
--digests 显示摘要
-f, --filter filter 根据提供的条件过滤输出
--format string 指定返回值的模板文件
--no-trunc 不截断输出，显示完整的镜像信息
-q, --quiet 只显示镜像ID
- parameter:
| REPOSITORY | Mirrored repository source |
| TAG | Mirrored label |
| IMAGE ID | Mirror id |
| CREATED | Mirror creation time |
| SIZE | Mirror size |
docker search mirror search
- The web version can search for images through Docker Hub
- Address: https://registry.hub.docker.com/search?q=&type=image
- Search with docker search in Linux command line
Options:
| Name, shorthand | default | description |
--automated |
Deprecated Only show automatic build |
|
--filter , -f |
Filter the output according to the provided conditions | |
--format |
Use Go templates for print search | |
--limit |
25 |
Maximum number of search results |
--no-trunc |
Don't truncate the output | |
--stars , -s |
Not recommended, only show at least x stars |
- For example :
- Filter the search results by favorites or others --filter=stars=3000 (The searched mirrors are those with STARS greater than 3000)
docker pull download image
# 下载镜像 docker pull 镜像名[:tag]
# tag可以指定版本，没有的话默认使用最新版
[root@admin ~]# docker pull mysql
Using default tag: latest # 如果不写tag 默认就是最新版
latest: Pulling from library/mysql
d121f8d1c412: Pull complete # 分层下载，docker image 的核心，联合文件系统
f3cebc0b4691: Pull complete
1862755a0b37: Pull complete
489b44f3dbb4: Pull complete
690874f836db: Pull complete
baa8be383ffb: Pull complete
55356608b4ac: Pull complete
dd35ceccb6eb: Pull complete
429b35712b19: Pull complete
162d8291095c: Pull complete
5e500ef7181b: Pull complete
af7528e958b6: Pull complete
Digest: sha256:e1bfe11693ed2052cb3b4e5fa356c65381129e87e38551c6cd6ec532ebe0e808# 签名信息
Status: Downloaded newer image for mysql:latest
docker.io/library/mysql:latest # 真实地址
# docker pull mysql
# docker pull docker.io/library/mysql:latest
# 两者等价的
Specified version download
- The version must exist, you can see on docker hub
# 指定版本下载 版本不可乱写 可在 docker hub 上查看
[root@admin ~]# docker pull mysql:5.7 # 加上了tag标签后可指定版本下载
5.7: Pulling from library/mysql
d121f8d1c412: Already exists # 可以看到这里会显示一些文件已存在
f3cebc0b4691: Already exists # 这就是分层下载的好处 可以共用一些文件
1862755a0b37: Already exists
489b44f3dbb4: Already exists
690874f836db: Already exists
baa8be383ffb: Already exists
55356608b4ac: Already exists
277d8f888368: Pull complete
21f2da6feb67: Pull complete
2c98f818bcb9: Pull complete
031b0a770162: Pull complete
Digest: sha256:14fd47ec8724954b63d1a236d2299b8da25c9bbb8eacc739bb88038d82da4919
Status: Downloaded newer image for mysql:5.7
docker.io/library/mysql:5.7
docker rmi delete mirror
- Can be deleted by IMAGE ID, or according to the image name
# 删除指定id的镜像
docker rmi -f 容器id
# 删除多个镜像
docker rmi -f 容器id 容器id 容器id
# 删除全部镜像
docker rmi -f $(docker images -aq)