How Do You Install Docker on Debian Linux in GCP?

Problem scneario
In Google Cloud Platform you have a Debian Linux server. You want to install Docker on it. What do you do?

Solution
1. Create a file called dockerinstall.sh in the /tmp/ directory with the following content:

apt-get -y update
apt-get install -y apt-transport-https ca-certificates wget software-properties-common

wget https://download.docker.com/linux/debian/gpg 
apt-key add gpg

echo "deb [arch=amd64] https://download.docker.com/linux/debian $(lsb_release -cs) stable" | sudo tee -a /etc/apt/sources.list.d/docker.list
apt-get -y update

apt-get -y install docker-ce

2. Run this script with sudo (e.g., sudo bash /tmp/dockerinstall.sh). It may take 10 minutes and appear to stall. This is normal.