CI undefined errors in yaml file
As pointed out by @oliver.sander on the mailing list there is an issue with the CI and some yaml files. Some discoveries so far:
Example of the error (at time of wrtiting): https://gitlab.dune-project.org/core/dune-grid/-/pipelines/28603
Using CI lint under https://gitlab.dune-project.org/core/dune-grid/-/ci/lint returns a 500 error
After removing the include part of the yamle file the linting works.
Linting yaml files of other projects works if they don't have that include part and doesn't if the have this include part.