Understanding the file type variable expansion change in GitLab 15.7

What this post added

This post details the removal of file type variable expansion in GitLab CI jobs starting from version 15.7. Previously, file type variables would have their contents expanded, which posed a security risk by potentially exposing sensitive data. This behavior was deprecated in 15.5 and removed in 15.7. The post provides examples of job outputs before and after the change and advises users to update their CI jobs to reference file variables directly.