Docker installation for RHEL based systems
- install
  * sudo dnf --refresh update
  * sudo dnf upgrade
  * sudo dnf install yum-utils
  * sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
  * sudo dnf install docker-ce docker-ce-cli containerd.io docker-compose-plugin
- start docker
  * sudo service docker start
