Install docker on Linux deployment

Introduction: After learning docker, I always wanted to have a deeper understanding, so I just bought an ECS to do an experiment on it. Docker official installation URL:

Docker is divided into two versions: docker CE (community version/personal version) and docker EE (enterprise version).
This time , dockerCE is installed because ECS uses the version of centOS 7.
CentOS7 installation 1.
Uninstall the old version, the old version of docker is called docker or docker-engine If these are installed, you need to uninstall them first because they have dependencies
sudo yum remove docker
docker-latest- logrotate
docker- logrotate
docker- selinux
docker-engine- selinux

If the yum report reports that these packages are not installed, you can install them.

【Install docker on Linux deployment】2. Install dependent packages:

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

2.1. Add docker software installation package source:
sudo yum-config-manager --add-repo

2.1.1 You can use the image address of Aliyun, and the pull image speed is faster .
sudo yum-config-manager --add-repo repo

【Install docker on Linux deployment】2.2. Update yum package index:

yum makecache fast
2.3. Install docker CE
sudo yum install docker- ce
2.4. Start docker service
systemctl start docker.service
2.5. Uninstall docker
2.5.1. Uninstall docker package, image on host, container, Volumes or custom config files are not automatically removed
sudo yum remove docker- ce
2.5.2, remove all images, containers and volumes
sudo rm -rf /var/lib/docker

docker info
container list
docker pull nginx
download image

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