diff --git a/.gitignore b/.gitignore
index deec0ac..de5fc34 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,3 +11,4 @@ data
 tests/test_data/output/*.txt
 tests/regression_test_data/test_data
 **/__pycache__
+*.img
diff --git a/nextflow.config b/nextflow.config
index 5f186b9..73c402b 100644
--- a/nextflow.config
+++ b/nextflow.config
@@ -89,6 +89,8 @@ profiles {
              enabled = true
              autoMounts = true
              cacheDir = "$PWD"
+            // Prevent mkfifo failure in srst2 with Nextflow 23+ and Singularity
+             runOptions = '-B $(mktemp -d):/tmp'
         }
     }
 }