Update Dockerfile

Dockerfile

@@ -15,8 +15,10 @@ RUN apt-get update && apt-get install -y \
 
 ENV OPENCV_VERSION="4.10.0"
 
-RUN apt-get -qq update \
-    && apt-get -qq install -y --no-install-recommends \
+RUN apt-get update && apt-get install -y python3-opencv
+RUN apt-get update && apt-get install ffmpeg libsm6 libxext6  -y
+
+RUN apt-get -qq install -y --no-install-recommends \
         build-essential \
         cmake \
         git \