diff --git a/containers/dockerfile_cpu b/containers/dockerfile_cpu
index c54c092..e07c06c 100644
--- a/containers/dockerfile_cpu
+++ b/containers/dockerfile_cpu
@@ -7,11 +7,9 @@ RUN micromamba install -y -n base -f /tmp/env.yml && \
 
 COPY grits/ /tmp/grits/
 
-COPY setup.py /tmp/
-
 RUN ls -la /tmp
 
-RUN python -m pip install /tmp
+RUN python -m pip install /tmp/grits
 
 RUN pytest -vx