Install Docker Engine on Ubuntu 20.04 systems

install_docker_ubuntu.sh

#!/bin/bash

main() {
  sudo apt-get update \
    && sudo apt-get install \
      apt-transport-https \
      ca-certificates \
      curl \
      gnupg \
      lsb-release \
    && curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg \
    && echo "deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu $(lsb_release -cs) 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
}

main