install docker container

if you use the os centos and don't think about inner process 

just write the follow the line

$ su - root

$ curl -fsSL https://get.docker.com/ | sudo sh

if you encounter this message "cannot connect to the docker daemon at //var/run/docker.sock. 

is the docker daemon running?"  you didn't start the docker daemon.

$ sudo systemctl start docker

$ sudo systemctl enable docker

otherwise, you read the website 

https://docs.docker.com/install/linux/docker-ce/centos/

followed added lines are parts of website

$ sudo yum install /path/to/package.rpm




Docker is installed but not started. The docker group is created, but no users are added to the group.


Start Docker.


$ sudo systemctl start docker





Verify that Docker Engine - Community is installed correctly by running the hello-world image.


$ sudo docker run hello-world

https://docs.docker.com/docker-for-windows/

https://docs.docker.com/docker-for-mac/