Install Docker on Ubuntu

This page will explain how to install Docker on Ubuntu. The following steps are taken from the official Docker website.

1. Use SSH to connect to the Ubuntu server.

2. Add Docker's official GPG key.

   sudo apt-get update
   sudo apt-get install ca-certificates curl
   sudo install -m 0755 -d /etc/apt/keyrings
   sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
   sudo chmod a+r /etc/apt/keyrings/docker.asc
   

3. Add the repository to Apt sources.

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

4. Install the latest version of Docker and additional packages.

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

To not have to type sudo before every docker command, run this script and change <USERNAME> to your username:

sudo usermod -aG docker <USERNAME>

Log out using logout and log in again for the changes to take effect.