normalize-mp3
adjusts the volume of WAV, MP3 and OGG files to a standard volume level
RUN apt-get update && \
apt-get install -y normalize-audio
RUN apt-get update && \
apt-get install -y normalize-audio
RUN apt-get update && \
apt-get install -y normalize-audio
RUN apt-get update && \
apt-get install -y normalize-audio