Install Docker

This post explains how to install Docker on Debian or Ubuntu and which commands are useful.

Installation

1. Update packages and install dependencies

sudo apt update
sudo apt install ca-certificates curl gnupg -y

2. Add the GPG key Debian:

sudo install -m 0755 -d /etc/apt/keyrings
curl -fsSL https://download.docker.com/linux/debian/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
sudo chmod a+r /etc/apt/keyrings/docker.gpg

Ubuntu:

sudo install -m 0755 -d /etc/apt/keyrings
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
sudo chmod a+r /etc/apt/keyrings/docker.gpg

3. Add repository

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

4. Update packages and install Docker

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

5. Check if Docker is installed and working

sudo docker run hello-world

Usefull Commands

Check Docker Service Status

sudo service status docker

Show all containers

docker ps -a

Start container

docker start <name or id>

Stop the container

docker stop <name or id>

Delete container

docker rm <name or id>