Docker commonly used commands [essential basic skills]

Docker common commands

1. Help command

1. View the currentdocker version

docker  version

2. Viewdocker’s detailed information

docker info

3.docker’s help command

docker  --help

2. Mirror command

Mirror command	illustrate
docker images	List mirrors for localhost
docker search 镜像名称	Search for images fromdocker HUB
docker pull 镜像名称	Download the image fromdocker HUB
docker rmi 镜像名称	Delete local image

docker images --help: ViewimagesWhat commands can we use

docker images -qa:View all image namesID

Search for an image name

[root@10 vagrant]# docker search tomcat

Search detailed image name information

parameter name	describe
--no-trunc	Show full description
--limit	Paginated display
-f	filter conditionsdocker search -f STARS=5 tomcat

docker search  --no-trunc tomcat
    
分页处理  前5条
    docker search  --limit 5 tomcat
查找STARS大于5的
    docker search  --limit SRARS=5 tomcat

3. Download command

`docker pull + image name: version number (without version number, download the latest by default)

eg:

--下载tomcat
docker   pull  tomcat 
    
--下载Redis
docker  pull  redis:3.5
    
--下载centOs7
    docker pull  centos:centos7

4. Image deletion command

View the command to delete the image

docker rmi --help
    
 --结果
    Usage:  docker rmi [OPTIONS] IMAGE [IMAGE...]

Remove one or more images

Aliases:
  docker image rm, docker image remove, docker rmi

Options:
  -f, --force      Force removal of the image
      --no-prune   Do not delete untagged parents

Delete command: delete one or more

docker rmi redis:latest  tomcat:latest

--强制删除  -f
docker rmi  -f redis:latest  tomcat:latest

Delete all image files

docker  rmi  -f  $(docker images -qa)
    
    docker images -qa:  查找所有的docker镜像

2. Container commands

1.Downloadcentos7

docker pull  centos:centos7

2. Create and start the container

docker run  [OPTIONS] IMAGE [COMMAND]

options	interpretation
--name	Container new name: Specify a name for the container
-d	Run the container in the background and return the container ID, that is, start the guardian container
-i	Start the container ininteractive mode, usually used together with-t
-t	Reallocate a pseudo input terminal for the container, usually used together with -i
-P:	Random port mapping
-p	Specified end projection Present or lessFour typesFormat: 1.ip:hostPort:containerPort 2.ip::containerPort 3.hostPort:containerPort 4.containerPort

interactive container

docker run -it  centos  /bin/bash

3. List running containers

Check what containers are currently running:

docker ps [OPTIONS]

OPTIONS	illustrate
-a	List all currently running containers + those that have been run in history
-l	Show recently created containers
-n	Display the last n containers created
--no-trunc	Do not truncate output
-q	Silent mode. Only the container number is displayed

eg:

--显示所有正在运行容器编号
docker ps -qa

4. Command to exit the container

Exit method	illustrate
exit	Container stops exiting
Shortcut key:ctrl+p+q	The container exits, but does not exit

The first

exit

--退出的结果显示
[root@8f09e627e2e7 /]# exit
exit
[root@10 /]# 

Second method: Use shortcut keys

快捷键:  ctrl+p+q
    
    如果再次返回:通过   docker  exec  -it  容器ID   

[root@10 ~]# docker ps -a
CONTAINER ID   IMAGE            COMMAND                  CREATED          STATUS                       PORTS                                         NAMES
1ca9ce7200aa   centos:centos7   "/bin/bash"              3 minutes ago    Up 3 minutes                                                               reverent_wozniak
8f09e627e2e7   centos:centos7   "/bin/bash"              19 minutes ago   Exited (127) 5 minutes ago                                                 tender_booth
2c8ea87f45c6   mysql:5.6        "docker-entrypoint.s…"   2 months ago     Exited (255) 2 months ago    0.0.0.0:12345->3306/tcp, :::12345->3306/tcp   mysql
[root@10 ~]# 

5. Start the container

docker start 容器的ID(可以是前面的ID部分输入即可)

Restart container

docker  restart   容器部分ID

6. Stop the container

docker stop 容器ID
    
docker kill  容器ID

7. Container deletion command

docker rm  容器ID

Delete all in batches

docker  rm -f  $(docker ps -qa)

Use pipe character to delete

docker ps -aq | xargs docker rm

3. Other commands

1. Guardian container

docker run -d  容器名称

Write a simple script, print and run

docker run  -d  centos:centos7 /bin/bash -c  'while true; do echo hello;sleep 2;done'

--我们查看容器
docker ps

Print logs for this container

docker logs -t -f --tail 3  容器ID

2. View container processes

docker top  容器ID

3. View the details of this container

docker  inspect  容器ID 

4. File copy

docker cp  容器ID:容器内路径  目的地路径