install docker script

install_docker.sh

#!/bin/bash
# docker installation on Ubunutu 16.04+
# source https://www.dockerfile.de/docker-tutorial-installation

# remove any old docker
sudo apt-get remove docker docker-engine docker.io

# install prerequisites
sudo apt-get install \
 apt-transport-https \
 ca-certificates \
 curl \
 software-properties-common

# add latest docker repo
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
sudo add-apt-repository \
 "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
 $(lsb_release -cs) \
 stable"

# install docker
sudo apt-get update
sudo apt-get install docker-ce -y

# run hello-world docker
sudo docker run hello-world