查看linux版本號
lsb_release -a
查看cpu內核：
uname -a
cat /etc/issue
https://docs.docker.com/install/linux/docker-ce/ubuntu/
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
錯誤無法啓動 編輯 /etc/docker/daemon.json 修改爲{"registry-mirrors": ["http://34df6785.m.daocloud.io"]} 就可以了。
啓動docker：
systemctl start docker
sudo docker run hello-world
顯示下面內容就代表安裝成功了
Hello from Docker!
This message shows that your installation appears to be working correctly.
To generate this message, Docker took the following steps:
1. The Docker client contacted the Docker daemon.
2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
(amd64)
3. The Docker daemon created a new container from that image which runs the
executable that produces the output you are currently reading.
4. The Docker daemon streamed that output to the Docker client, which sent it
to your terminal.
To try something more ambitious, you can run an Ubuntu container with:
$ docker run -it ubuntu bash
Share images, automate workflows, and more with a free Docker ID:
https://hub.docker.com/
For more examples and ideas, visit:
https://docs.docker.com/get-started/