Set up Docker

docker.sh

#!/usr/bin/env bash
#
######* Install and setup Docker ######
if [ ! -f /usr/bin/docker ] || [ ! -f /usr/libexec/docker/cli-plugins/docker-compose ]; then
  for pkg in docker.io docker-doc docker-compose docker-compose-v2 podman-docker containerd runc;
    do sudo apt-get remove $pkg;
  done
  #
  # 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

  # 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
  #
  sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
  #
  sudo groupadd docker
  sudo usermod -aG docker $USER
  newgrp docker
  sudo systemctl enable docker
  sudo systemctl start docker
  echo -e "\n\tDocker installed\n"
else
  echo -e "\n\tDocker already installed\n"
fi

One-liner

curl -fsSL https://short.jasn.link/docker | sudo bash