Docker study(1)- Initial install

Reference:
https://docs.docker.com/engine/install/centos/
https://docs.docker.com/config/daemon/systemd/#httphttps-proxy
https://www.runoob.com/docker/docker-tutorial.html
Centos Docker install
[root@localhost ~]# yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
[root@localhost ~]# sudo yum-config-manager --enable docker-ce-nightly
[root@localhost ~]# sudo yum-config-manager --enable docker-ce-test
[root@localhost ~]# yum install docker-ce docker-ce-cli containerd.io
[root@localhost ~]# systemctl start docker
[root@localhost ~]# systemctl status docker
[root@localhost ~]# docker info
[root@localhost ~]# docker run hello-world
HTTP/HTTPS proxy
[root@localhost ~]#sudo mkdir -p /etc/systemd/system/docker.service.d
[root@localhost ~]#vi /etc/systemd/system/docker.service.d/http-proxy.conf
[Service]
Environment="HTTP_PROXY=http://xxx:80"
Environment="HTTPS_PROXY=http://xxx:80"
Environment="NO_PROXY=localhost,127.0.0.1,.cisco.com"
[root@localhost ~]#sudo systemctl daemon-reload
[root@localhost ~]#sudo systemctl restart docker
[root@localhost ~]#sudo systemctl show --property=Environment docker
[root@localhost ~]#docker run hello-world
Attach Docker
  • docker attach
  • docker exec, recommend use this command
[root@localhost ~]# docker exec --help
[root@localhost ~]# docker exec -it 35cd76f9a02d /bin/bash
root@35cd76f9a02d:/var/www/html# 

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