Add Jenkinsfile and test image Dockerfile

Jenkinsfile

+#!groovy
+
+node('docker-trusty') {
+    stage('Cleanup') {
+        step([$class: 'WsCleanup'])
+    }
+
+    stage('Checkout') {
+        checkout scm
+        sshagent(['67aa0a6c-64d5-40bd-ae9f-4ff66de97411']) {
+            sh "git checkout ${BRANCH_NAME}"
+        }
+    }
+
+    stage('Install prerequisites') {
+        sh "virtualenv venv"
+        sh """
+        . venv/bin/activate
+        pip install -r requirements.txt
+        """
+
+        sh """
+        . venv/bin/activate
+        pip install -r requirements_tests.txt
+        """
+    }
+
+    stage('Test') {
+        try {
+            sh """
+            . venv/bin/activate
+            bash ./run_tests.sh
+            """
+            currentBuild.result = 'SUCCESS'
+        } catch (Exception err) {
+            currentBuild.result = 'FAILURE'
+        }
+    }
+
+    stage('Push') {
+        try {
+            if (currentBuild.result == 'SUCCESS') {
+                echo "Test successful, pushing to github"
+                sshagent(['67aa0a6c-64d5-40bd-ae9f-4ff66de97411']) {
+                    sh "git remote add github git@github.com:DistributedSystemsGroup/zoe.git"
+                    sh "git branch -a"
+                    sh "git push github HEAD"
+                    sh "git push github --tags"
+                }
+            } else {
+                echo "Build failed, no push"
+            }
+        } catch (Exception err) {
+            currentBuild.result = 'FAILURE'
+            }
+    }
+
+    stage('Notification and cleanup') {
+        echo "Sending notifications"
+        step([$class: 'Mailer', notifyEveryUnstableBuild: true, recipients: 'daniele.venzano@eurecom.fr', sendToIndividuals: true])
+        step([$class: 'GitHubCommitStatusSetter', errorHandlers: [[$class: 'ChangingBuildStatusErrorHandler', result: 'FAILURE']], reposSource: [$class: 'ManuallyEnteredRepositorySource', url: 'https://github.com/DistributedSystemsGroup/zoe.git']])
+    }
+}

contrib/jenkins_docker/Dockerfile

+# This Dockerfile is used to build an image for testing Zoe with Jenkins and the Docker slave plugin
+
+FROM ubuntu:trusty
+MAINTAINER Daniele Venzano <venza@brownhat.org>
+
+RUN locale-gen en_US.UTF-8 && \
+    apt-get -q update && \
+    DEBIAN_FRONTEND="noninteractive" apt-get -q upgrade -y --no-install-recommends && \
+    DEBIAN_FRONTEND="noninteractive" apt-get -q install -y --no-install-recommends openssh-server openjdk-7-jre-headless python3 python3-pip git python3-dev build-essential libpq-dev  && \
+    apt-get -q autoremove && \
+    apt-get -q clean -y && rm -rf /var/lib/apt/lists/* && rm -f /var/cache/apt/*.bin && \
+    sed -i 's|session    required     pam_loginuid.so|session    optional     pam_loginuid.so|g' /etc/pam.d/sshd && \
+    mkdir -p /var/run/sshd
+
+ENV LANG en_US.UTF-8
+ENV LANGUAGE en_US:en
+ENV LC_ALL en_US.UTF-8
+
+# Set user jenkins to the image
+RUN useradd -m -d /home/jenkins -s /bin/sh jenkins && \
+    echo "jenkins:jenkins" | chpasswd
+
+RUN pip3 install --upgrade pip virtualenv
+
+RUN printf "\nStrictHostKeyChecking no\n" >> /etc/ssh/ssh_config
+
+# Standard SSH port
+EXPOSE 22
+
+# Default command
+CMD ["/usr/sbin/sshd", "-D"]