Install Docker on Ubuntu

docker-install-ubuntu.sh

sudo apt-get update
sudo apt-get -y install apt-transport-https ca-certificates curl software-properties-common
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"

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

# Starting up

test_result = "XX$(sudo docker run hello-world | grep Hello)" 

if [ "XXX$test_result -eq "XXXHello from Docker!" ] ; then
   echo "FAIL: result is -> $test_result"
else
   echo "DOCKER INSTALLED OK"
fi