Installing Docker

In this lesson, we'll install the latest version of Docker CE. The commands used throughtout this video are below.

Prerequisites

Uninstall old versions:

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

Install Docker CE

Add the Utilities needed for Docker:

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

Set up the stable repository:

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

Install Docker CE:

sudo yum -y install docker-ce

Enable and start Docker:

sudo systemctl start docker && sudo systemctl enable docker

Add cloud_user to the docker group:

sudo usermod -aG docker cloud_user

Source - Linux Academy