diff --git a/singularity/icf.def b/singularity/icf.def
index 963f5ca..60bba76 100644
--- a/singularity/icf.def
+++ b/singularity/icf.def
@@ -8,6 +8,12 @@ From: debian:bookworm-slim
 %help
     INM ICF utilities.
 
+%files
+    ./bin /inm-icf-utils/bin
+    ./assets /inm-icf-utils/assets
+    ./requirements-devel.txt /inm-icf-utils/requirements-devel.txt
+    README.md /inm-icf-utils/README.md
+    LICENSE /inm-icf-utils/LICENSE
 
 %post
     # install all non-datalad deps from Debian proper
@@ -20,9 +26,7 @@ From: debian:bookworm-slim
     # datalad-installer cannot install outside /tmp, which will not make it
     # into the final image, move
     mv $(cut -d = -f 2 < /tmp/dlinstaller_env.sh | cut -d : -f 1) /git-annex
-    # the inm-icf-utilities
-    git clone https://github.com/psychoinformatics-de/inm-icf-utilities.git /inm-icf-utils
-    # and the inm-icf-utilities dependencies
+    # the inm-icf-utilities dependencies
     python3 -m pip install --break-system-packages -r /inm-icf-utils/requirements-devel.txt
     # enable "next" extension for patching datalad core, done inside the image, not
     # for a particular user