fixing runscript

Author: Malmahrouqi3

.github/workflows/images/Singularity.cpu_bench

@@ -20,5 +20,8 @@ From: ubuntu:24.04
     ./mfc.sh test --dry-run -j $(nproc)
 
 %runscript
+    mkdir -p /tmp/mfc/build
     cd /opt/MFC
-    exec ./mfc.sh "$@
+    cp -r /opt/MFC /tmp/mfc/
+    cd /tmp/mfc/MFC
+    exec ./mfc.sh "$@"