install docker centos 7 code example

Example 1: docker install in centos u7

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

Example 2: install docker centos 8

dnf config-manager --add-repo=https://download.docker.com/linux/centos/docker-ce.repo

Example 3: install docker on centos

# First add repo to yum config manager
sudo yum install -y yum-utils
sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
# Use added repo to install and start docker
sudo yum install docker-ce docker-ce-cli containerd.io
sudo systemctl start docker
# Optional: Validate by run sample image 
sudo docker run hello-world

Example 4: docker on centos7

# To install docker on centos 7 or SL7
# From https://docs.docker.com/engine/install/centos/
sudo yum install -y yum-utils
sudo yum-config-manager \
    --add-repo \
    https://download.docker.com/linux/centos/docker-ce.repo
# From https://stackoverflow.com/questions/45272827/docker-ce-on-rhel-requires-container-selinux-2-9
# You must add the latest container-selinux form http://mirror.centos.org/centos/7/extras/x86_64/Packages/
# This version is correct as of 11-3-2020:
sudo yum install -y \
    http://mirror.centos.org/centos/7/extras/x86_64/Packages/container-selinux-2.119.2-1.911c772.el7_8.noarch.rpm
# Now you can continue w/ the Docker installation
sudo yum install -y docker-ce docker-ce-cli containerd.io
# To start and check the version
sudo systemctl start docker
sudo systemctl enable docker
sudo docker -v

Example 5: install docker centos 7

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