update opencv to 4.1.1 (#33)

Author: albertoxamin

Dockerfile

@@ -23,7 +23,7 @@ RUN apt-get update \
 RUN pip install numpy
 
 WORKDIR /
-ENV OPENCV_VERSION="4.1.0"
+ENV OPENCV_VERSION="4.1.1"
 RUN wget https://github.com/opencv/opencv/archive/${OPENCV_VERSION}.zip \
 && unzip ${OPENCV_VERSION}.zip \
 && mkdir /opencv-${OPENCV_VERSION}/cmake_binary \