Remove the conda package cache as we can't hardlink to it
MODIFY
repo2docker/buildpacks/conda/install-miniconda.bash
repo2docker/buildpacks/conda/install-miniconda.bash
@@ -69,6 +69,7 @@ fi
# Clean things out!
conda clean -tipsy
+rm -rf /srv/conda/pkgs
# Remove the big installer so we don't increase docker image size too much
rm ${INSTALLER_PATH}

Remove the conda package cache as we can't hardlink to it