docker(镜像常用命令)

docker version    #显示docker的版本信息。

Server: Docker Engine - Community
 Engine:
  Version:          19.03.11
  API version:      1.40 (minimum version 1.12)
  Go version:       go1.13.10
  Git commit:       42e35e61f3
  Built:            Mon Jun  1 09:12:26 2020
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.2.6
  GitCommit:        894b81a4b802e4eb2a91d1ce216b8817763c29fb
 runc:
  Version:          1.0.0-rc8
  GitCommit:        425e105d5a03fabd737a126ad93d62a9eeede87f
 docker-init:
  Version:          0.18.0
  GitCommit:        fec3683

docker info       #显示docker的系统信息，包括镜像和容器的数量

Client:
 Debug Mode: false

Server:
 Containers: 3
  Running: 0
  Paused: 0
  Stopped: 3
 Images: 1
 Server Version: 19.03.11
 Storage Driver: overlay2
  Backing Filesystem: xfs
  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: 894b81a4b802e4eb2a91d1ce216b8817763c29fb
 runc version: 425e105d5a03fabd737a126ad93d62a9eeede87f
 init version: fec3683
 Security Options:
  seccomp
   Profile: default
 Kernel Version: 4.18.0-147.8.1.el8_1.x86_64
 Operating System: CentOS Linux 8 (Core)
 OSType: linux
 Architecture: x86_64
 CPUs: 1
 Total Memory: 797.1MiB
 Name: centos8
 ID: L5PV:BLJ6:MJ3P:GLVN:DBYJ:ZWVI:SEHH:MTWJ:7JV6:BF4T:CWND:E2V5
 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://mirror.ccs.tencentyun.com/
 Live Restore Enabled: false

docker 命令 --help #帮助命令

docker images #查看所有本地主机上的镜像 可以使用docker image ls代替

docker search  #搜索镜像,或者在dockerhub上搜索。

docker pull #下载镜像 docker image pull

docker rmi #删除镜像 docker image rm

[root@iz2zeak7sgj6i7hrb2g862z ~]# docker images
REPOSITORY            TAG                 IMAGE ID            CREATED           SIZE
hello-world           latest              bf756fb1ae65        4 months ago     13.3kB
mysql                 5.7                 b84d68d0a7db        6 days ago       448MB

# 解释
#REPOSITORY			# 镜像的仓库源
#TAG				# 镜像的标签(版本)		---lastest 表示最新版本
#IMAGE ID			# 镜像的id
#CREATED			# 镜像的创建时间
#SIZE				# 镜像的大小

# 可选项
Options:
  -a, --all         Show all images (default hides intermediate images) #列出所有镜像
  -q, --quiet       Only show numeric IDs # 只显示镜像的id
  
[root@iz2zeak7sgj6i7hrb2g862z ~]# docker images -a  #列出所有镜像详细信息
[root@iz2zeak7sgj6i7hrb2g862z ~]# docker images -aq #列出所有镜像的id
d5f28a0bb0d0
f19c56ce92a8
1b6b1fe7261e
1b6b1fe7261e

[root@iz2zeak7sgj6i7hrb2g862z ~]# docker search mysql

# --filter=STARS=3000 #过滤，搜索出来的镜像收藏STARS数量大于3000的
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
      
[root@iz2zeak7sgj6i7hrb2g862z ~]# docker search mysql --filter=STARS=3000
NAME        DESCRIPTION         STARS            OFFICIAL        AUTOMATED
mysql       MySQL IS ...        9520             [OK]                
mariadb     MariaDB IS ...      3456             [OK]   

# 下载镜像 docker pull 镜像名[:tag]
[root@iz2zeak7sgj6i7hrb2g862z ~]# docker pull tomcat:8
8: Pulling from library/tomcat #如果不写tag，默认就是latest
90fe46dd8199: Already exists   #分层下载： docker image 的核心 联合文件系统
35a4f1977689: Already exists 
bbc37f14aded: Already exists 
74e27dc593d4: Already exists 
93a01fbfad7f: Already exists 
1478df405869: Pull complete 
64f0dd11682b: Pull complete 
68ff4e050d11: Pull complete 
f576086003cf: Pull complete 
3b72593ce10e: Pull complete 
Digest: sha256:0c6234e7ec9d10ab32c06423ab829b32e3183ba5bf2620ee66de866df # 签名防伪
Status: Downloaded newer image for tomcat:8
docker.io/library/tomcat:8 #真实地址

#等价于
docker pull tomcat:8
docker pull docker.io/library/tomcat:8

docker rmi -f 镜像id #删除指定id的镜像
[root@iz2zeak7sgj6i7hrb2g862z ~]# docker rmi -f f19c56ce92a8

docker rmi -f $(docker images -aq) #删除全部的镜像
[root@iz2zeak7sgj6i7hrb2g862z ~]# docker stop $(docker ps -a -q)