Q:

how to install docker in centos 7

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

sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
sudo yum install docker-ce -y
sudo systemctl start docker
sudo systemctl enable docker
sudo systemctl status docker
sudo docker -v

#Executing the Docker Command Without Sudo
sudo usermod -aG docker $USER
logout
login
docker ps

3
$ sudo yum install -y yum-utils

$ sudo yum-config-manager \
    --add-repo \
    https://download.docker.com/linux/centos/docker-ce.repo
1
dnf config-manager --add-repo=https://download.docker.com/linux/centos/docker-ce.repo
2
sudo yum update
sudo yum install yum-utils device-mapper-persistent-data lvm2

sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
sudo yum install docker-ce -y
sudo systemctl start docker
sudo systemctl enable docker
sudo systemctl status docker
sudo docker -v
0
$ sudo yum remove docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-engine
1

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