Icywang86rui gpu fix (#118)

* Update Dockerfile.cpu

* Update Dockerfile.gpu

Author: icywang86rui

docker/1.11.0/final/py2/Dockerfile.cpu

@@ -42,7 +42,7 @@ COPY --from=tensorflow_serving_image /usr/bin/tensorflow_model_server /usr/bin/t
 COPY $framework_installable .
 COPY $framework_support_installable .
 
-RUN pip install --no-cache-dir \
+RUN pip install -U --no-cache-dir \
     numpy \
     scipy \
     sklearn \

docker/1.11.0/final/py2/Dockerfile.gpu

@@ -71,7 +71,7 @@ COPY --from=tensorflow_serving_image /usr/bin/tensorflow_model_server /usr/bin/t
 COPY $framework_installable .
 COPY $framework_support_installable .
 
-RUN pip install --no-cache-dir \
+RUN pip install -U --no-cache-dir \
     numpy \
     scipy \
     sklearn \