updated to final version

Dockerfile

@@ -59,7 +59,7 @@ COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
 RUN pip install gunicorn
 RUN apt-get update && apt-get install -y libreoffice poppler-utils
-
+RUN apt-get install ffmpeg -y
 # Make port 5000 available to the world outside this container
 EXPOSE 5000