【Docker】Docker入門系列_0 Centos 7.6 部署docker (yum install)

Get Docker Engine. (CentOs) 

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

Step1: uninstall all old versions. （如果安裝過，刪除舊版本）

$ sudo yum remove docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-engine

Step2: set up the repository. (設置 yum 倉庫）

$ sudo yum install -y yum-utils device-mapper-persistent-data lvm2

$ sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

Step3: intall docker engine - community

$ sudo yum install docker-ce docker-ce-cli containerd.io

Step4: Start Docker.

$ sudo systemctl start docker

 Step5: Verify the Docker Engine - Community is intalled  correctly by running the hello-world image.

$ sudo docker run hello-world