fixing docker file thanks to sergei

Author: dbickson

Dockerfile

@@ -5,8 +5,7 @@ RUN apt -y install software-properties-common
 RUN add-apt-repository -y ppa:deadsnakes/ppa
 RUN apt update
 RUN apt -y install python3.8
-RUN apt -y install libopencv-dev libgl1 ffmpeg
+RUN apt -y install libopencv-dev libgl1
 RUN apt -y install python3-pip
 RUN python3.8 -m pip install --upgrade pip
-RUN python3.8 -m pip install fastdup
-
+RUN python3.8 -m pip install fastdup matplotlib matplotlib-inline torchvision pillow pyyaml