Docker container is missing aplay for local playback

[ghost]

Describe the bug
Docker container is missing aplay for local playback

To Reproduce
Steps to reproduce the behavior:
0. Run docker container as described in de README.md

1. Go to 'Webpage'
2. Click on 'Play audio on'
3. Set to 'Server'
4. Click on 'Speak'
5. See error in logs 'ERROR:mimic3_http.app:[Errno 2] No such file or directory: 'aplay' and on screen.

Expected behavior
Sound!

Environment (please complete the following information):

• Device type: x86
• OS: Linux
• Mimic3 latest (https://github.com/MycroftAI/mimic3/tree/be72c185e471e3ef939147679df9e1d00262c513)

Fix

Fix is add --device /dev/snd to the docker run command e.g.

docker run \
       -it --device /dev/snd \
       -p 59125:59125 \
       -v "/docker/mimic3:/home/mimic3/.local/share/mycroft/mimic3" \
       'mycroftai/mimic3'

And inside the docker container install and enable audio.
Run as root in shell the following commands:

mkdir -p /var/cache/apt/amd64/archives/partial
apt install -y --no-install-recommends libasound2 libasound2-plugins alsa-utils
usermod -a -G audio mimic3

Now I have sound. But all my changes will be gone with every docker update :(