Multi target docker images never triggered when template included

What did you see?

When including the multi-target-docker-images.gitlab-ci.yml template, the job to create child pipelines is never run.

What did you expect to see?

multiple-docker-images job to exist and child pipelines to be created.

Where does this happen?

GitLab CI pipelines

How do I recreate this?

1. Follow instructions in multi-target-docker-images.gitlab-ci.yml to add the template to the pipeline
2. Run the pipeline

Any additional information?

This looked to be working before. The problematic part looks to be:

multiple-docker-images:
  rules:
    - if: $MULTI_DOCKER_IMAGE_BUILD_ENABLED
      when: never

As removing this specific rule or removing the MULTI_DOCKER_IMAGE_BUILD_ENABLED: "1" from variables will make the job and creation of child pipelines work. Note that moving MULTI_DOCKER_IMAGE_BUILD_ENABLED: "1" to parallel:matrix also doesn't work.

Pipeline that did work:

• https://gitlab.developers.cam.ac.uk/uis/devops/experiments/st981-test/lab-allocator/-/pipelines/609578 (https://gitlab.developers.cam.ac.uk/uis/devops/experiments/st981-test/lab-allocator/-/commit/80bb5016f4b457945c7589f6e5b331d509344d74 / !92 (67ffef3d))

Pipeline that doesn't work:

• https://gitlab.developers.cam.ac.uk/uis/devops/iam/authentication/shibboleth/attributes-proxy/-/pipelines/636525 (https://gitlab.developers.cam.ac.uk/uis/devops/iam/authentication/shibboleth/attributes-proxy/-/merge_requests/22/diffs?commit_id=b0c4011a37e3c0d7f49b9e02b3ccb8bf7b346fe3 / 528b26c6)

Looking at the above, it looks like we never actually ran the pipeline with the latest revision of the code before merging. I think, reverting to multiple files, might be the way forward. Discussion about this:

!92 (comment 703780)

added issuetypeBug teamDevOps workflowNeeds Refinement labels

assigned to @st981

mentioned in merge request !103 (merged)

removed workflowNeeds Refinement label

mentioned in commit 062353be

closed with merge request !103 (merged)