Introduce Jenkins.

Jenkinsfile

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+pipeline {
+	agent none
+
+	triggers {
+		pollSCM 'H/10 * * * *'
+	}
+
+	options {
+		disableConcurrentBuilds()
+		buildDiscarder(logRotator(numToKeepStr: '14'))
+	}
+
+	stages {
+		stage("Test: baseline (jdk8)") {
+			agent {
+				docker {
+					image 'adoptopenjdk/openjdk8:latest'
+					args '-v $HOME/.m2:/root/.m2'
+				}
+			}
+			environment {
+				ARTIFACTORY = credentials('02bd1690-b54f-4c9f-819d-a77cb7a9822c')
+			}
+			steps {
+				sh "ci/test.sh"
+			}
+		}
+	}
+
+	post {
+		changed {
+			script {
+				slackSend(
+						color: (currentBuild.currentResult == 'SUCCESS') ? 'good' : 'danger',
+						channel: '#spring-ws',
+						message: "${currentBuild.fullDisplayName} - `${currentBuild.currentResult}`\n${env.BUILD_URL}")
+				emailext(
+						subject: "[${currentBuild.fullDisplayName}] ${currentBuild.currentResult}",
+						mimeType: 'text/html',
+						recipientProviders: [[$class: 'CulpritsRecipientProvider'], [$class: 'RequesterRecipientProvider']],
+						body: "<a href=\"${env.BUILD_URL}\">${currentBuild.fullDisplayName} is reported as ${currentBuild.currentResult}</a>")
+			}
+		}
+	}
+}

ci/test.sh

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+#!/bin/bash
+
+set -euo pipefail
+
+MAVEN_OPTS="-Duser.name=jenkins -Duser.home=/tmp/jenkins-home" \
+  ./mvnw -s settings.xml clean dependency:list test -Dsort -B

ci/version.sh

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+#!/bin/bash
+
+set -euo pipefail
+
+RAW_VERSION=`MAVEN_OPTS="-Duser.name=jenkins -Duser.home=/tmp/jenkins-home" ./mvnw \
+  org.apache.maven.plugins:maven-help-plugin:3.2.0:evaluate \
+  -Dexpression=project.version -q -DforceStdout`
+
+# Split things up
+VERSION_PARTS=($RAW_VERSION)
+
+# Grab the last part, which is the actual version number.
+echo ${VERSION_PARTS[${#VERSION_PARTS[@]}-1]}
+

settings.xml

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+<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
+          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+          xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0
+                      https://maven.apache.org/xsd/settings-1.0.0.xsd">
+
+	<servers>
+		<server>
+			<id>sonatype</id>
+			<username>${env.USERNAME}</username>
+			<password>${env.PASSWORD}</password>
+		</server>
+		<server>
+			<id>spring-plugins-release</id>
+			<username>${env.ARTIFACTORY_USR}</username>
+			<password>${env.ARTIFACTORY_PSW}</password>
+		</server>
+		<server>
+			<id>spring-libs-snapshot</id>
+			<username>${env.ARTIFACTORY_USR}</username>
+			<password>${env.ARTIFACTORY_PSW}</password>
+		</server>
+		<server>
+			<id>spring-libs-milestone</id>
+			<username>${env.ARTIFACTORY_USR}</username>
+			<password>${env.ARTIFACTORY_PSW}</password>
+		</server>
+		<server>
+			<id>spring-libs-release</id>
+			<username>${env.ARTIFACTORY_USR}</username>
+			<password>${env.ARTIFACTORY_PSW}</password>
+		</server>
+	</servers>
+
+</settings>