Install Docker on Debian

Introduction

One of the first things I always install is Docker. It is literally my favorite piece of software. There is an official guide for Debian, which an be found on the Official Docker Docs. But this is my way of doing it.

Installation

Update your repositories to make sure we have the latest packages

sudo apt update

Then install dependencies

sudo apt install ca-certificates curl

Create keyring directory

sudo install -m 0755 -d /etc/apt/keyrings

Download Docker's GPG key into the folder we just created

sudo curl -fsSL https://download.docker.com/linux/debian/gpg -o /etc/apt/keyrings/docker.asc

Set the appropriate permissions for docker.asc

sudo chmod a+r /etc/apt/keyrings/docker.asc

Add Docker's official repository to the system's package sources list

echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/debian \
  $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

Update the repositories to get the latest packages from the repository we just added

sudo apt update

Install Docker packages

sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

(OPTIONAL) Post Install

If you do not want to preface your Docker commands with sudo you can run this command to add the current user to the "docker" group. There are some security implications here so be sure this is something you really want to do.

sudo usermod -aG docker $USER