Docker 入门笔记 1 - 安装docker

安装配置 repository

确保apt 可以使用HTTPs来访问 repository

sudo apt-get install
apt-transport-https \
ca-certificates \
curl \
software-properties-common

添加docker 官方GPG key

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

验证添加的GPG key 的fingerprint 正确

$ sudo apt-key fingerprint 0EBFCD88

pub   4096R/0EBFCD88 2017-02-22
Key fingerprint = 9DC8 5822 9FC7 DD38 854A  E2D8 8D81 803C 0EBF CD88
uid                  Docker Release (CE deb) <docker@docker.com>
sub   4096R/F273FCD8 2017-02-22

建立stable repository

sudo add-apt-repository \
"deb [arch=amd64] https://download.docker.com/linux/ubuntu \
$(lsb_release -cs) \
stable"

安装docker ce

安装最新版的docker ce

sudo apt-get update
sudo apt-get install docker-ce

为生产环境安装特定版本docker ce

$ apt-cache madison docker-ce

docker-ce | 17.09.0~ce-0~ubuntu | https://download.docker.com/linux/ubuntu xenial/stable amd64 Packages
......

//列表显示了可用的repository， 第二列是docker version

sudo apt-get install docker-ce=<VERSION>

查看docker是否正确安装

使用示例测试

sudo docker run hello-world

升级docker ce

sudo apt-get update
then install the new version as you want.

卸载 docker

sudo apt-get purge docker-ce
//To delete all images, containers, and volumes
sudo rm -rf /var/lib/docker

配置 docker

实用non-root user 管理docker

//docker daemon binds to a Unix socket instead of a TCP port, other users can only access it using sudo

sudo groupadd docker
sudo usermod -aG docker $USER
//verify
docker run hello-world

//如果发生  ~/.docker/ 权限不对的warning， 运行如下命令
$ sudo chown "$USER":"$USER" /home/"$USER"/.docker -R
$ sudo chmod g+rwx "/home/$USER/.docker" -R

设定启动/停止 docker服务

sudo systemctl enable docker
sudo systemctl disable docker

启动停止docker

sudo service docker restart