From the output, we can see the group_vars/prod was used in the pipeline.
Thus, I guess we can say the PR works as expected.
openstack.image: [WARNING]: While constructing a mapping from /builds/louistw/packer-openstack- openstack.image: hpc-image/CRI_XCBC/group_vars/prod, line 3, column 3, found a duplicate dict openstack.image: key (rstudio_provision). Using last defined value only. openstack.image: [WARNING]: While constructing a mapping from /builds/louistw/packer-openstack- openstack.image: hpc-image/CRI_XCBC/group_vars/prod, line 3, column 3, found a duplicate dict openstack.image: key (rstudio_ood_app_repo). Using last defined value only. openstack.image: [WARNING]: While constructing a mapping from /builds/louistw/packer-openstack- openstack.image: hpc-image/CRI_XCBC/group_vars/prod, line 3, column 3, found a duplicate dict openstack.image: key (rstudio_ood_app_refspec). Using last defined value only. openstack.image: [WARNING]: While constructing a mapping from /builds/louistw/packer-openstack- openstack.image: hpc-image/CRI_XCBC/group_vars/prod, line 3, column 3, found a duplicate dict openstack.image: key (rstudio_ood_app_version). Using last defined value only.