Change sed command to update the file inplace.

pipe-ing to the file was causing an empty file.

Author: neshdev

Dockerfile.tmpl

@@ -114,11 +114,9 @@ RUN pip uninstall -y pyarrow && \
     mamba install -y cudf cuml && \
     /tmp/clean-layer.sh
 
-# TODO(neshdev): Resolve pandas dependency another way
-RUN cat /opt/conda/lib/python3.10/site-packages/cudf/api/types.py \
-    | sed 's/^is_extension_type/# is_extension_type/g' \
-    | sed 's/^is_categorical/# is_categorical/g' \
-    > /opt/conda/lib/python3.10/site-packages/cudf/api/types.py
+# TODO: b/296444923 - Resolve pandas dependency another way
+RUN sed -i 's/^is_extension_type/# is_extension_type/g' /opt/conda/lib/python3.10/site-packages/cudf/api/types.py \
+    && sed -i 's/^is_categorical/# is_categorical/g' /opt/conda/lib/python3.10/site-packages/cudf/api/types.py
 {{ end }}
 
 # Install PyTorch