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Update end-to-end-demo.md #112

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5 changes: 4 additions & 1 deletion docs/end-to-end-demo.md
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In this guide, you will deploy Akri end-to-end, all the way from discovering local video cameras to the footage being streamed on a Web application. You will explore how Akri can dynamically discover devices, deploy brokers pods to perform some action on a device (in this case grabbing video frames and serving them over gRPC), and deploy broker services for obtaining the results of that action.

## Set up mock udev video devices
1. Install a kernel module to make v4l2 loopback video devices. Learn more about this module [here](https://github.com/umlaeute/v4l2loopback).
1. To make dummy video4linux devices, install the v4l2loopback kernel module and its prerequisites. Learn more about v4l2 loopback [here](https://github.com/umlaeute/v4l2loopback)
```sh
sudo apt update
sudo apt -y install linux-modules-extra-$(uname -r)
sudo apt -y install dkms
curl http://deb.debian.org/debian/pool/main/v/v4l2loopback/v4l2loopback-dkms_0.12.5-1_all.deb -o v4l2loopback-dkms_0.12.5-1_all.deb
sudo dpkg -i v4l2loopback-dkms_0.12.5-1_all.deb
```
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