# Audio in containers on IEN

## Requires:

- Retail Device Manager
- Audio

## Usage Instructions:

### Audio Client
Create the following Dockerfile:

```Dockerfile
FROM alpine:latest

RUN apk update && apk add --no-cache \
	alsa-lib \
	alsa-utils \
	pulseaudio \
	pulseaudio-alsa \
	pulseaudio-utils

COPY [AUDIO_FILE] /[AUDIO_FILE]
```

Build this image locally and upload the image to the IEN

### IEN:

Import client images into local container registry

Label nodes you want Audio enabled on:

- `kubectl label nodes <nodename> node.ncr.com/class=touchpoint`

Apply the following manifest for an audio client pod.

```yaml
apiVersion: v1
kind: Pod
metadata:
  name: audio-client
spec:
  containers:
  -
    # Uncomment one of these lines
    command: ["paplay", "-p", "/[AUDIO_FILE]"] # This is a pulseaudio playback test
    env:
    - name: XDG_RUNTIME_DIR
      value: /tmp/xdg_runtime
    - name: PULSE_SERVER
      value: /tmp/xdg_runtime/pa.socket
    image: audio-client:latest
    imagePullPolicy: IfNotPresent
    name: audio-client
    volumeMounts:
    - mountPath: /tmp/runtime
      name: xdg-runtime
      readOnly: false
  nodeSelector:
    node.ncr.com/class: touchpoint
  volumes:
  - hostPath:
      path: /tmp/runtime
      type: Directory
    name: xdg-runtime
```