Installation script for docker on Debian

install-docker.sh

apt-get install -y \
    apt-transport-https \
    ca-certificates \
    curl \
    gnupg2 \
    software-properties-common    
curl -fsSL https://download.docker.com/linux/debian/gpg | apt-key add -

if apt-key finger | grep -q "0EBF CD88"; then
    add-apt-repository \
       "deb [arch=amd64] https://download.docker.com/linux/debian \
       $(lsb_release -cs) \
       stable"
    apt-get update
    apt-get install -y docker-ce
    docker run hello-world;
else
    echo "Docker fingerprint was not found."
    exit 1;
fi