Adding Jenkinsfile for CI, triggering on upstream fetching artifacts

.gitignore

@@ -12,3 +12,7 @@
 *.out
 
 .idea
+
+# Client build directory and artifact
+target/
+resources/public/js/compiled/app.js

Jenkinsfile

@@ -0,0 +1,78 @@
+pipeline {
+    agent none
+
+    triggers {
+        upstream(upstreamProjects: 'cse-core/master', threshold: hudson.model.Result.SUCCESS)
+    }
+
+    options { checkoutToSubdirectory('src/cse-server-go') }
+
+    stages {
+        stage('Build client') {
+            agent { label 'windows' }
+
+            environment {
+                _JAVA_OPTIONS="-Duser.home=${env.BASE}\\lein-repositories\\${env.EXECUTOR_NUMBER}"
+            }
+
+            tools {
+                        jdk 'jdk8' 
+                        //Leiningen no auto-install available, installing manually
+                    }
+
+            steps {
+                dir('src/cse-server-go/client') {
+                    sh 'curl -O https://raw.githubusercontent.com/technomancy/leiningen/stable/bin/lein'
+                    sh './lein with-profile client cljsbuild once min'
+                }
+            }
+        }
+        stage('Build server') {
+            parallel {
+                stage('Build on Windows') {
+                    agent { label 'windows' }
+
+                    environment {
+                        GOPATH = "${WORKSPACE}"
+                        GOBIN = "${WORKSPACE}/bin"
+                        PATH = "${env.MINGW_HOME}/bin;${GOBIN};${env.PATH}"
+                    }
+
+                    tools {
+                        go 'go-1.11' 
+                        //'com.cloudbees.jenkins.plugins.customtools.CustomTool' 'mingw-w64' awaiting fix in customToolsPlugin
+                    }
+
+                    steps {
+                        sh 'echo Building on Windows'
+
+                        copyArtifacts(
+                            projectName: 'cse-core/master',
+                            filter: 'install/debug/**/*',
+                            target: 'src')
+
+                        dir ("${GOBIN}") {
+                            sh 'curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh'
+                        }
+                        dir ('src/cse-server-go') {
+                            sh 'dep ensure'
+                            sh 'go build'
+                        }
+                    }
+                }
+                stage ('Build on Linux') {
+                    agent { label 'linux' }
+
+                    tools {
+                        go 'go-1.11'
+                    }
+
+                    steps {
+                        sh 'echo building on Linux'
+                        sh 'go version'
+                    }
+                }
+            }
+        }
+    }
+}