docker setup

docker

ubuntu系统

安装docker

测试本机是否已经正确安装docker

 sudo docker run hello-world

如果run不通，继续下面步骤，否则跳过

1.Uninstall old versions
Older versions of Docker were called docker, docker.io, or docker-engine. If these are installed, uninstall them:

$ sudo apt-get remove docker docker-engine docker.io containerd runc

2.Install using the repository

update apt

$ sudo apt-get update
$ sudo apt-get install \
    ca-certificates \
    curl \
    gnupg \
    lsb-release

add Docker’s official GPG key

 curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg

set up the stable repository

 echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \
  $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

install docker engine

 sudo apt-get install docker-ce docker-ce-cli containerd.io

verify if it is installed correctly

 sudo docker run hello-world

docker group添加用户

除了root，其他用户使用docker都要sudo权限，解决办法是把用户名添加到group

1.Create the docker group

 sudo groupadd docker

2.Add your user to the docker group.

 sudo usermod -aG docker $USER

3.activate the changes

newgrp docker 

4.Verify that you can run docker commands without sudo.

 docker run hello-world

拉取已有镜像

1.登录阿里云Docker Registry

docker login --username=18678907302 registry.cn-qingdao.aliyuncs.com

密码: zhinengjiansuo123

2.从Registry中拉取镜像

docker pull registry.cn-qingdao.aliyuncs.com/docker_hub1024/our_server:[镜像版本号]

目前镜像版本号见最新群消息

从镜像起容器

查看镜像

docker images

起容器

docker run -p 30000:22 -p 38090:8090 -p 35432:5432 -p 30080:80 -p 30443:443 --name our_server -itd registry.cn-qingdao.aliyuncs.com/docker_hub1024/our_server:[镜像版本号] /bin/sh

ps. 此后除非宿主机重启, 否则容器将会一直运行. 如果不小心把容器关了 可以执行：

docker start our_server

进入容器（之后打开宿主机只需要执行此行）

docker exec -it our_server /bin/bash

将镜像推送到云

查看容器ID

docker ps

保存当前容器

docker commit [容器ID] our_server:[新的版本号]

查看镜像ID

docker images

提交到云

$ docker login --username=18678907302 registry.cn-qingdao.aliyuncs.com
$ docker tag [镜像ID] registry.cn-qingdao.aliyuncs.com/docker_hub1024/our_server:[新的版本号]
$ docker push registry.cn-qingdao.aliyuncs.com/docker_hub1024/our_server:[新的版本号]

附录. 如何把自己的conda环境迁移到现有docker

conda [env] export > [xx].yaml

把这个yaml传到docker上 然后

conda env update -n base --file [xx].yaml