rebuilds the container every wednesday

Jenkinsfile

@@ -1,3 +1,6 @@
+// Multi-branch pipeline. Build once on wednesday from a "master" branch only
+CRON_SETTINGS = BRANCH_NAME == "master" ? '''H H * * 3'''
+
 pipeline {
   environment {
     imagename = "phaefelfinger/tv7playlist"
@@ -7,6 +10,10 @@ pipeline {
   
   agent { node { label 'docker' } }
 
+  triggers {
+    cron(CRON_SETTINGS)
+  }
+
   stages {
     stage('Cloning repository') {
       steps {