Install Docker 1.13 and Docker-compose on ubuntu 16.04

installDockerAndDockerCompose.sh

#1.Install packages to allow apt to use a repository over HTTPS:
sudo apt-get install -y --no-install-recommends \
    apt-transport-https \
    ca-certificates \
    curl \
    software-properties-common
    
#2.Add Docker official GPG key:
curl -fsSL https://apt.dockerproject.org/gpg | sudo apt-key add -

#3.Setup Docker Repository
sudo add-apt-repository \
       "deb https://apt.dockerproject.org/repo/ \
       ubuntu-$(lsb_release -cs) \
       main"
       
#4 Update packages
sudo apt-get update

#5 Install Packages 
sudo apt-get -y install docker-engine

#6 Install Docker-Compose
curl -L https://github.com/docker/compose/releases/download/1.6.0/docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose; chmod +x /usr/local/bin/docker-compose

How can you make sure it install Install Docker 1.13?

Probably in this case it is not installing that specific version (as you have notice)

It may have been the version at the moment of writing this script (3 years ago)

If you need that specific version, you can try installing it using dpkg