Ansible playbook with packer in Jenkins

Quick one.

While working on a build chain in order to register home-baked AMIs, I wanted to use the ansible-local packer provisioner to setup the instance with a very basic playbook. I needed to provide ansible a playbook but didn’t find immediately how to achieve this within the Jenkins-packer module. Turns out it’s tricky, in the JSON Template Text (or the template file), declare the playbook_file like this:

"type": "ansible-local",
"playbook_file": "{{ user `test_yml` }}",
"command": "PYTHONUNBUFFERED=1 ansible-playbook"

Then in the File Entries field, the Variable Name must be test_yml and File Contents filled with the playbook.

Jenkins packer