Docker在Ubuntu上安装与使用

https://docs.docker.com/engine/install/ubuntu/

1.卸载旧版

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

2.install packages to allow apt to use a repository over HTTPS:

sudo apt-get update
sudo apt-get install apt-transport-https ca-certificates curl gnupg-agent software-properties-common

3.Add Docker’s official GPG key:

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

验证：sudo apt-key fingerprint 0EBFCD88

4.set up the stable repository

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

5.Install Docker Engine

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

验证：sudo docker run hello-world

更新：sudo apt-get update

二、使用-上传自己的镜像

https://docs.docker.com/docker-hub/

1.注册Docker Hub

2.创一个仓库

3.在Ubuntu上登录

sudo docker login

4.创一个Dockerfile

cat > Dockerfile <<EOF
FROM busybox
CMD echo "Hello world! This is my first Docker image."
EOF

5.build your Docker image

sudo docker build -t <your_username>/my-first-repo .

最后那个点是Dockerfile的路径

6.查看本地有哪些镜像

sudo docker image ls

7.Test your docker image locally

sudo docker run <your_username>/my-first-repo

8. push your Docker image to Docker Hub

docker push <your_username>/my-first-repo

9.退出登录

docker logout

三、使用-使用镜像

https://github.com/docker/labs/blob/master/beginner/chapters/alpine.md

sudo docker pull alpine
sudo docker run alpine ls -l
sudo docker run alpine echo "hello from alpine"
sudo docker run -it alpine /bin/sh
exit
sudo docker ps
sudo docker ps -a

四、