Fix singularity config

0220.singularity_test.cfg

@@ -42,11 +42,8 @@ TardisDroneUuid = "$ENV(TardisDroneUuid)"
 STARTD_NAME = $ENV(TardisDroneUuid)
 
 
-HasDocker = TRUE
-STARTD.HasDocker = TRUE
-STARTD.STARTD_JOB_ATTRS = $(STARTD_JOB_ATTRS), HasDocker
-SINGULARITY_JOB = TRUE
-
+Singularity = /usr/bin/apptainer
+Singularity_Job = TRUE
 # Forces all jobs to use the CernVM-based image.
 SINGULARITY_IMAGE_EXPR = "/cvmfs/unpacked.cern.ch/registry.hub.docker.com/mschnepf/slc7-condocker:latest"
 # Maps $_CONDOR_SCRATCH_DIR on the host to /srv inside the image.