diff --git a/Dockerfile-CI b/Dockerfile-CI
index 362aacfa3356bc2afdbe7dc16103474464ef7585..c361c7f68cebc8e38d82c9cf27d0ab728e5664c5 100644
--- a/Dockerfile-CI
+++ b/Dockerfile-CI
@@ -2,6 +2,9 @@
 FROM mambaorg/micromamba:latest
 COPY --chown=$MAMBA_USER:$MAMBA_USER . /tmp/binder
 
+RUN ls
+RUN ls install_files/*
+
 # Install files
 RUN cp -ra install_files/* /opt/conda/