Add NNPACK to CI (#2085)

docker/Dockerfile.ci_cpu

@@ -35,4 +35,8 @@ RUN bash /install/ubuntu_install_redis.sh
 COPY install/ubuntu_install_golang.sh /install/ubuntu_install_golang.sh
 RUN bash /install/ubuntu_install_golang.sh
 
+# NNPACK deps
+COPY install/ubuntu_install_nnpack.sh /install/ubuntu_install_nnpack.sh
+RUN bash /install/ubuntu_install_nnpack.sh
+
 ENV PATH $PATH:$CARGO_HOME/bin:/usr/lib/go-1.10/bin

docker/install/ubuntu_install_nnpack.sh

@@ -0,0 +1,13 @@
+apt-get update && apt-get install -y --no-install-recommends --force-yes git cmake
+
+
+git clone https://github.com/Maratyszcza/NNPACK NNPACK
+cd NNPACK
+# TODO: specific tag?
+git checkout 1e005b0c2
+cd -
+
+mkdir -p NNPACK/build
+cd NNPACK/build
+cmake -DCMAKE_INSTALL_PREFIX:PATH=. -DNNPACK_INFERENCE_ONLY=OFF -DNNPACK_CONVOLUTION_ONLY=OFF -DNNPACK_BUILD_TESTS=OFF -DCMAKE_POSITION_INDEPENDENT_CODE=ON .. && make -j4 && make install
+cd -