Add microphone filtering

[rbray89]

This change introduces pulseaudio as a go-between for audio processing so that we can use the echo-cancel module to "clean up" the microphone. This is especially useful when white-noise machines are running in the background.

[ivadim]

Hi @rbray89
This looks awesome. I tried myself to setup filtering before using containers but configuration became too complex...

Can I ask you to fix small issues before I merge this?

• You removed this line:

- ./configuration/nginx/.htpasswd:/etc/nginx/.htpasswd

idea behind this as you can setup nginx password before running container...

• Build is failing with error

Step 4/5 : COPY audio_entry.sh /
COPY failed: stat /var/lib/docker/tmp/docker-builder519891823/audio_entry.sh: no such file or directory

it happens because working directory is outside of the current Docker file's directory...

fruitnanny/azure-pipelines.pr.yml

Line 29 in ca810c7

docker build . -f docker/$(stage.name)/Dockerfile -t $(container.name)

fruitnanny/azure-pipelines.yml

Line 36 in ca810c7

docker build . -f docker/$(stage.name)/Dockerfile -t $(container.name)

I think you can just add cd to docker/$(stage.name)

[ivadim]

@rbray89 thank you for the contribution 🙇 . I'll fix the build later