docker Basic Operations Guide

Mirroring

Get a mirror

Search from Docker Hub Mirror:

docker search ubuntu

Download Mirror:

docker pull ubuntu:18.04

If the image download slow change mirror source: Ubuntu 16.04 +, Debian 8 +, CentOS 7 in /etc/docker/daemon.json Please write the following (if the file does not exist Please new file)

{
  "registry-mirrors": [
    "https://dockerhub.azk8s.cn",
    "https://reg-mirror.qiniu.com"
  ]
}

Note that we must ensure compliance with the json file specification, or Docker will not start.

After restarting the service.

sudo systemctl daemon-reload
sudo systemctl restart docker

Listed Mirror

docker images
docker image ls

Remove Mirror

docker image rm <image name>

Container operations

Open container

docker run --runtime=nvidia -it -v /home/:/home -p 8001:8001 centos7:py36 /bin/bash
-v 目录映射
-p 端口映射

Start container has been terminated

docker container start <container id>

Started termination container

docker container stop <container id>

Delete termination container

docker container rm <container id>

View container running

docker ps

View all containers

docker ps -a

Into the container

docker attach <container id>     exit后容器会停止
docker exec -it <container id> bash     exit后容器不会停止

Create a new image from the container

docker commit
docker commit [OPTIONS] CONTAINER [REPOSITORY[:TAG]]
-a :提交的镜像作者；
-c :使用Dockerfile指令来创建镜像；
-m :提交时的说明文字；
-p :在commit时，将容器暂停。

Docker modifications within the container zone

apt update （为了安装tzdata）
apt install tzdata （为了获取/usr/share/zoneinfo）
rm /etc/localtime
ln -s /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
date （显示为当前时区时间）