CentOS 7:

Install the necessary utilities:

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

Add the Docker repository to install the current version:

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

Install Docker:

yum install -y docker-ce

Ubuntu:

Update the list of packages and install the necessary ones:

apt update

apt install -y \
apt-transport-https \
ca-certificates \
curl \
software-properties-common

Add the repository key:

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | apt-key add -

Add the repository itself and re-read the list of packages:

add-apt-repository \
"deb [arch=amd64] https://download.docker.com/linux/ubuntu \
$(lsb_release -cs) \
stable"

apt update

Install Docker:

apt install -y docker-ce

P.S. Docker Engine is deprecated, CE must be installed.

Tagged: Tags CentOS Docker Ubuntu