Check if the build is started by a downstream pipeline
!520 (merged) introduced a bug, where the review apps for CE would not work properly. We should check if CI_PIPELINE_SOURCE=pipeline, and if true, do not symlink EE to CE.
!520 (merged) introduced a bug, where the review apps for CE would not work properly. We should check if CI_PIPELINE_SOURCE=pipeline, and if true, do not symlink EE to CE.