adjusted Jenkinsfile for branch deployment

Jenkinsfile

@@ -1,12 +1,20 @@
 @Library('campudus-jenkins-shared-lib') _
 
+final String BRANCH = params.BRANCH
+final boolean NOTIFY_SLACK_ON_FAILURE = params.NOTIFY_SLACK_ON_FAILURE
+final boolean NOTIFY_SLACK_ON_SUCCESS = params.NOTIFY_SLACK_ON_SUCCESS
+
+final String BRANCH_NAME = BRANCH ? BRANCH.tokenize('/').last() : ""
+
 IMAGE_NAME = "campudus/grud-backend"
 DEPLOY_DIR = 'build/libs'
 LEGACY_ARCHIVE_FILENAME="grud-backend-docker.tar.gz"
 DOCKER_BASE_IMAGE_TAG = "build-${BUILD_NUMBER}"
 
 SLACK_CHANNEL = "#grud"
 
+final boolean isBranch = BRANCH_NAME && BRANCH_NAME != "master"
+
 // flag deactivate tests for fast redeployment from jenkins frontend
 shouldTest = true
 
@@ -21,14 +29,19 @@ pipeline {
   }
 
   triggers {
-    pollSCM('H/5 * * * *')
+    githubPush()
   }
 
   options {
     timestamps()
     copyArtifactPermission('*');
   }
 
+  parameters {
+    booleanParam(name: 'NOTIFY_SLACK_ON_FAILURE', defaultValue: true, description: '')
+    booleanParam(name: 'NOTIFY_SLACK_ON_SUCCESS', defaultValue: false, description: '')
+  }
+
   stages {
     stage('Cleanup & Build base docker image') {
       steps {
@@ -45,7 +58,7 @@ pipeline {
           groovyVars = [:] << getBinding().getVariables()
           groovyVars.each  {k,v -> print "$k = $v"}
         }
-        
+
         sh "docker build -t ${IMAGE_NAME}-cacher --target=cacher ."
       }
     }
@@ -85,10 +98,12 @@ pipeline {
           --label "GIT_COMMIT_DATE=${GIT_COMMIT_DATE}" \
           --label "BUILD_DATE=${BUILD_DATE}" \
           -t ${IMAGE_NAME}:${DOCKER_BASE_IMAGE_TAG}-${GIT_COMMIT} \
-          -t ${IMAGE_NAME}:latest \
+          ${isBranch ? "-t ${IMAGE_NAME}:${BRANCH_NAME}" : ""} \
+          ${!isBranch ? "-t ${IMAGE_NAME}:latest" : ""} \
           -f Dockerfile \
           --rm --target=prod .
         """
+
         // Legacy, but needed for some project deployments
         sh "docker save ${IMAGE_NAME}:latest | gzip -c > ${DEPLOY_DIR}/${LEGACY_ARCHIVE_FILENAME}"
       }
@@ -105,7 +120,16 @@ pipeline {
       steps {
         withDockerRegistry([ credentialsId: "dockerhub", url: "" ]) {
           sh "docker push ${IMAGE_NAME}:${DOCKER_BASE_IMAGE_TAG}-${GIT_COMMIT}"
-          sh "docker push ${IMAGE_NAME}:latest"
+
+          script {
+            if (BRANCH_NAME) {
+              sh "docker push ${IMAGE_NAME}:${BRANCH_NAME}"
+            }
+
+            if (!BRANCH_NAME || BRANCH_NAME == 'master') {
+              sh "docker push ${IMAGE_NAME}:latest"
+            }
+          }
         }
       }
     }
@@ -115,17 +139,19 @@ pipeline {
     success {
       wrap([$class: 'BuildUser']) {
         script {
-          sh "echo successful"
-          slackOk(channel: SLACK_CHANNEL, message: "Image pushed to docker registry: ${IMAGE_NAME}:${DOCKER_BASE_IMAGE_TAG}-${GIT_COMMIT}")
+          if (NOTIFY_SLACK_ON_SUCCESS) {
+            slackOk(channel: SLACK_CHANNEL, message: BRANCH ? "BRANCH=${BRANCH}" : "")
+          }
         }
       }
     }
 
     failure {
       wrap([$class: 'BuildUser']) {
         script {
-          sh "echo failed"
-          slackError(channel: SLACK_CHANNEL)
+          if (NOTIFY_SLACK_ON_FAILURE) {
+            slackError(channel: SLACK_CHANNEL, message: BRANCH ? "BRANCH=${BRANCH}" : "")
+          }
         }
       }
     }