diff --git a/conf/cheaha.config b/conf/cheaha.config
index 323a625..578259c 100644
--- a/conf/cheaha.config
+++ b/conf/cheaha.config
@@ -5,9 +5,15 @@ params {
     config_profile_url = 'https://www.uab.edu/cores/ircp/bds'
 }
 
+env {
+    TMPDIR="$USER_SCRATCH"
+    SINGULARITY_TMPDIR="$USER_SCRATCH"
+}
+
 singularity {
     enabled = true
     autoMounts = true
+    runOptions = "--contain --workdir $USER_SCRATCH"
 }
 
 process {