Step 1 - Setting up the Docker repo⌗

Debian doesn’t use sudo, so instead login as root and update your system.

su
apt update

Next, install a few prerequisite packages which let apt use packages over HTTPS:

apt install apt-transport-https ca-certificates curl gnupg2 software-properties-common

Then add the GPG key for the official Docker repository to your system:

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

Add the Docker repository to APT sources:

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

Next, update the package database with the Docker packages from the newly added repo:

sudo apt update

Make sure you are about to install from the Docker repo instead of the default Debian repo:

apt-cache policy docker-ce

Step 2 - Installing Docker⌗

Now that everything is setup and you are able to pull the package from the Docker repo. Install it!

apt install docker-ce

Just add your username to the docker group.

/usr/sbin/usermod -aG docker ${USER}

For the changes to take affect, logout and back in, or type:

- ${USER}

Now confirm that your user has been added to the docker group:

id -nG