update to allow ffmpeg-python

Dockerfile

@@ -15,7 +15,7 @@ RUN truncate -s0 /tmp/preseed.cfg && \
        apt-get install -y tzdata
 ## cleanup of files from setup
 RUN rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
-RUN apt-get update && apt-get -y install python3-pip python3-psycopg2 libpq-dev gunicorn mediainfo cmake libgl1-mesa-glx libglib2.0-0 python3-ldap libjpeg-turbo-progs
+RUN apt-get update && apt-get -y install python3-pip python3-psycopg2 libpq-dev gunicorn mediainfo cmake libgl1-mesa-glx libglib2.0-0 python3-ldap libjpeg-turbo-progs ffmpeg
 COPY requirements.txt requirements.txt
 RUN pip3 install -r requirements.txt
 RUN pip3 install --upgrade pillow --user

requirements.txt

@@ -17,3 +17,4 @@ dlib
 face_recognition
 Werkzeug
 flask-compress
+ffmpeg-python