add jenkinsfile

Jenkinsfile

+// https://gitlab.geant.net/live-projects/jenkins-pipeline/-/tree/master/vars
+library 'SWDPipeline'
+
+// Parameters:
+// project_name (must match the name of the project in GitLab/SWD release jenkins)
+// extra_recipients (optional, list of email addresses to always receive notifications, in addition to the default in jenkins)
+// python_test_versions (list of python versions, resolving to docker tags, to test against)
+String name = 'brian-polling-manager'
+List<String> extraRecipients = ['bjarke@nordu.net', 'erik.reid@geant.org']
+List<String> pythonTestVersions = ['3.11']
+
+SimplePythonBuild(name, extraRecipients, pythonTestVersions)