centos-7: Add some opencv build options

Hopefully will results in reduced size of shared libraries

centos-7/Dockerfile

@@ -135,11 +135,17 @@ RUN version=3.4.8 && \
         -D PYTHON_DEFAULT_EXECUTABLE=/usr/bin/python3 \
         -D OPENCV_EXTRA_MODULES_PATH=/tmp/opencv_contrib-${version}/modules \
         -D ENABLE_CXX11=ON \
+        -D ENABLE_LTO=ON \
         -D BUILD_EXAMPLES=OFF \
         -D BUILD_PACKAGE=OFF \
         -D BUILD_TESTS=OFF \
         -D BUILD_PERF_TESTS=OFF \
         -D BUILD_DOCS=OFF \
+        -D BUILD_opencv_apps= \
+        -D BUILD_WITH_DEBUG_INFO=OFF \
+        -D ENABLE_PRECOMPILED_HEADERS=ON \
+        -D ENABLE_PROFILING=OFF \
+        -D ENABLE_COVERAGE=OFF \
         -D OPENCV_ENABLE_NONFREE=OFF \
         -D WITH_CUDA=ON \
         -D WITH_CUBLAS=ON \