install docker on ubuntu; shell script

install docker on ubuntu

#!/bin/sh
#
# Docker install script
#
# Run this script with Administration priviledges (sudo)
#

echo "------------ Install pre-requisites ---------------------"

# Install packages to allow apt to use a repository over HTTPS:
apt-get install apt-transport-https ca-certificates curl software-properties-common

# Add Docker’s official GPG key:
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add

# Print the key fingerprint to verify it is: 9DC8 5822 9FC7 DD38 854A E2D8 8D81 803C 0EBF CD88
apt-key fingerprint 0EBFCD88

echo "------------ Set and update repository ------------------"
# Set up the stable repository:
add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
apt-get update

echo "------------ Install and test docker -------------------"

# Install the latest version of Docker:
apt-get install docker-ce

#add user to docker group to avoid use of sudo (remember to exit and re-open bash) 
sudo usermod -aG docker $(whoami)

# Verify that Docker is installed correctly by running the hello-world image
sudo docker run hello-world