Installing Docker on Debian 9

Docker is software for automating the deployment and management of applications using container-level virtualization. It lets you package an application with all its dependencies into an isolated container that can be moved to any Linux system with cgroups support.

Installation

Update the package list:

sudo apt update

Install the packages required for apt to work over HTTPS:

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

Add the GPG key for the official Docker repository:

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

Add the Docker repository to the APT sources list:

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

Update the package database:

sudo apt update

Confirm that Docker will be installed from the Docker repository rather than the default Debian one:

apt-cache policy docker-ce

The Installed field should show (none) and the Candidate field should show a version from the Docker repository.

Install Docker:

sudo apt install docker-ce

After installation, Docker starts automatically on system boot. Check the service status:

sudo systemctl status docker

Expected output:

● docker.service - Docker Application Container Engine
   Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)
   Active: active (running) since Wed 2020-05-06 15:15:44 MSK; 2min 51s ago
     Docs: https://docs.docker.com
 Main PID: 6594 (dockerd)

Once installed, both the Docker service and the docker command-line client will be available on the server.

Installing via One-Click-Apps

Docker can also be installed in one click when placing an order. Select a VPS plan and choose Docker under Applications.

Installing Docker via One-Click-Apps