set job working directory to be current working directory when using singularity

gstlal/python/config/__init__.py

@@ -164,6 +164,14 @@ class Config:
 			if self.condor.transfer_files and x509_proxy:
 				submit_opts['x509userproxy'] = x509_proxy
 				submit_opts['use_x509userproxy'] = True
+			if not self.condor.transfer_files:
+				# set the job's working directory to be the same as the current
+				# working directory to match the behavior of vanilla jobs
+				if "environment" in submit_opts:
+					env_opts = submit_opts["environment"].strip('"')
+					submit_opts["environment"] = f'"{env_opts} SINGULARITY_PWD={self.rootdir}"'
+				else:
+					submit_opts["environment"] = f'"SINGULARITY_PWD={self.rootdir}"'
 		else:
 			submit_opts['getenv'] = True