Jenkinsfile-master

//Courtesy of Digital Ocean
//Borrowed from https://www.digitalocean.com/community/tutorials/how-to-install-and-use-docker-on-ubuntu-18-04

pipeline {
    agent any
    stages {
        stage('Update the current packages') {
            steps {
                sh 'sudo apt update'
            }
        }
        stage('Install prerequisite packages') {
            steps {
                sh 'sudo apt install -y apt-transport-https ca-certificates curl software-properties-common'
            }
        }
        stage('Add the GPG key to verify the Docker download') {
            steps {
                sh 'curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -'
            }
        }
        stage('Add the Docker repository to your local machine') {
            steps {
                sh 'sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu bionic stable"'
            }
        }
        stage('Update the packages again from the newly added repo') {
            steps {
                sh 'sudo apt update'
            }
        }
        stage('Point to the local Docker repo that you just created') {
            steps {
                sh 'apt-cache policy docker-ce'
            }
        }
        stage('Finally, install Docker') {
            steps {
                sh 'sudo apt install -y docker-ce'
            }
        }
        stage('Check that Docker is running on your remote workstation') {
            steps {
                sh 'sudo systemctl status docker'
            }
        }
        stage('Add your user to the Docker group') {
            steps {
                sh 'sudo usermod -aG docker ${USER}'
            }
        }
    }
}