- builder:
    name: test-builder
    builders:
        - shell:
            !j2: |
                {{ var }}
                {% for item in test_list -%}
                {{ item }}
                {% endfor %}

- job:
    name: test-job
    builders:
        - test-builder:
            var: "test variable"
            test_list:
                - a
                - b
                - c
