Install Docker

installDocker.sh

# prerequisites for docker
apt-get update
apt-get -y install apt-transport-https
apt-get -y install ca-certificates
apt-get -y install curl
apt-get -y install software-properties-common

# docker repos
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | apt-key add - \
    && echo "deb [arch=amd64] https://download.docker.com/linux/ubuntu xenial stable" >> /etc/apt/sources.list.d/additional-repositories.list \
    && echo "deb http://ftp-stud.hs-esslingen.de/ubuntu xenial main restricted universe multiverse" >> /etc/apt/sources.list.d/official-package-repositories.list \
    && apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 437D05B5 \
    && apt-get update

# docker
apt-get -y install docker-ce

# permissions
sudo usermod -a -G docker jenkins
sudo chown root:jenkins /var/run/docker.sock