镜像命令

查看docker的版本信息
[root@iz2zegwqmvm3ojk5uhtq5oz ~]# docker version
Client: Docker Engine - Community
 Version:           19.03.13
 API version:       1.40
 Go version:        go1.13.15
 Git commit:        4484c46d9d
 Built:             Wed Sep 16 17:03:45 2020
 OS/Arch:           linux/amd64
 Experimental:      false

Server: Docker Engine - Community
 Engine:
  Version:          19.03.13
  API version:      1.40 (minimum version 1.12)
  Go version:       go1.13.15
  Git commit:       4484c46d9d
  Built:            Wed Sep 16 17:02:21 2020
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.3.7
  GitCommit:        8fba4e9a7d01810a393d5d25a3621dc101981175
 runc:
  Version:          1.0.0-rc10
  GitCommit:        dc9208a3303feef5b3839f4323d9beb36df0a9dd
 docker-init:
  Version:          0.18.0
  GitCommit:        fec3683
[root@iz2zegwqmvm3ojk5uhtq5oz ~]#

　　

查看docker的系统信息，包括镜像的内容
[root@iz2zegwqmvm3ojk5uhtq5oz ~]# docker info
Client:
Debug Mode: false

Server:
Containers: 17
Running: 1
Paused: 0
Stopped: 16
Images: 2
Server Version: 19.03.13
Storage Driver: overlay2
Backing Filesystem: extfs
Supports d_type: true
Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local
Network: bridge host ipvlan macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 8fba4e9a7d01810a393d5d25a3621dc101981175
runc version: dc9208a3303feef5b3839f4323d9beb36df0a9dd
init version: fec3683
Security Options:
seccomp
Profile: default
Kernel Version: 3.10.0-957.27.2.el7.x86_64
Operating System: CentOS Linux 7 (Core)
OSType: linux
Architecture: x86_64
CPUs: 8
Total Memory: 15.51GiB
Name: iz2zegwqmvm3ojk5uhtq5oz
ID: MSXX:N4MZ:C5L4:DRVL:NAUL:DOHS:WN7Q:V6OG:ZITU:ROHC:THEZ:CT5T
Docker Root Dir: /var/lib/docker
Debug Mode: false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Registry Mirrors:
https://gevb2jt0.mirror.aliyuncs.com/
Live Restore Enabled: false

[root@iz2zegwqmvm3ojk5uhtq5oz ~]#

查看镜像信息
[root@iz2zegwqmvm3ojk5uhtq5oz ~]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
nginx               latest              c39a868aad02        11 days ago         133MB
centos              latest              0d120b6ccaa8        3 months ago        215MB

REPOSITORY：镜像的名字

TAG：镜像的tag值

IMAGE ID ：镜像的id

CREATED：镜像创建时间

SIZE：镜像的大小

　　

镜像搜索（搜索mysql镜像，同时留下赞数大于等于300的）

docker search mysql --filter=STARS=300 

　　

镜像下载

docker pull name:tag
[root@iz2zegwqmvm3ojk5uhtq5oz ~]# docker pull elasticsearch
Using default tag: latest  # 如果不写tag值，默认latest
latest: Pulling from library/elasticsearch 
05d1a5232b46: Pull complete  // 分层下载，联合文件系统
5cee356eda6b: Pull complete
89d3385f0fd3: Pull complete
65dd87f6620b: Pull complete
78a183a01190: Pull complete
1a4499c85f97: Pull complete
2c9d39b4bfc1: Pull complete
1b1cec2222c9: Pull complete
59ff4ce9df68: Pull complete
1976bc3ee432: Pull complete
5af49e8af381: Pull complete
42c8b75ff7af: Pull complete
7e6902915254: Pull complete
99853874fa54: Pull complete
596fbad6fcff: Pull complete
Digest: sha256:a8081d995ef3443dc6d077093172a5931e02cdb8ffddbf05c67e01d348a9770e
Status: Downloaded newer image for elasticsearch:latest
docker.io/library/elasticsearch:latest   # 镜像的名字，和elasticsearch等价

这两个命令等价：

docker pull elasticsearch
docker pull docker.io/library/elasticsearch:latest

　　

删除镜像

docker rmi -f 名称/镜像id

[root@iz2zegwqmvm3ojk5uhtq5oz ~]# docker rmi -f centos   # 删除当个的
Untagged: centos:latest
Untagged: centos@sha256:76d24f3ba3317fa945743bb3746fbaf3a0b752f10b10376960de01da70685fbd
Deleted: sha256:0d120b6ccaa8c5e149176798b3501d4dd1885f961922497cd0abef155c869566
[root@iz2zegwqmvm3ojk5uhtq5oz ~]# docker rmi -f ${docker images -aq}  # 删除全部的