How to extract YYYYMMDD from gitlab predefined variable in variables: section (not later in script section)
I have a .gitlab-ci.yml
with lots of variables which are defined sequentially from some earlier variables.
Instead of beginning with a hardcoded timestamp I want to use the predefined CI_JOB_STARTED_AT but I only want the YYYYMMDD part of it and not the whole ISO8601 she-bang.