fix(Dockerfile): Fixed issue with unable to fetch the response.

The issue was that there were no ffmpeg installed.

Dockerfile

@@ -4,6 +4,9 @@ WORKDIR /usr/app
 ENV PATH="/usr/app/venv/bin:$PATH"
 
 #RUN apt-get update && apt-get install -y git
+RUN apt-get update
+RUN apt-get install ffmpeg #issue 445
+
 RUN mkdir -p /usr/app
 RUN python -m venv ./venv