Build an aarch64 target?
Hey,
I tried to use docker-homebridge on a [NanoPi Neo2](http://wiki.friendlyarm.com/wiki/index.php/NanoPi_NEO2#Hardware_Spec), which features an Allwinner H5 SoC, which is `arm64v8`.

I couldn't get to run homebridge with any of the [3 `arm32*` images](https://github.com/oznu/docker-homebridge/wiki#image-variants).

In the end, I built my own `aarch64` image using the following steps:

1. Build a custom `oznu/s6-node` image to target `aarch64`. Basically just:
   ```
   docker build --build-arg S6_ARCH=aarch64 -t s6-node-aarch64 .
   ```

   It seems Node was updated on http://dl-cdn.alpinelinux.org/alpine/edge/, so I had to edit `Dockerfile`:

   ```
   ...
   ENV NODE_VERSION 8.11.1
   ...
   ```

2. Build a custom `oznu/homebridge` image using the `aarch64` built right before:

   Just edit `Dockerfile`:
   ```
   FROM s6-node-aarch64:latest
   ...
   ```

   And build:
   ```
   docker build -t homebridge-aarch64 .
   ```

3. Then follow instructions on https://github.com/oznu/docker-homebridge/wiki/Homebridge-on-Raspberry-Pi#3-create-docker-compose-manifest, but use the custom `aarch64` image:

   ```
   ...
       image: homebridge-aarch64:latest
   ...
   ```

This works fine.

To make things easier, and as you seem to already maintain different versions of the image (`raspberry-pi`, `debian`, etc.), could you build an `aarch64` target of the homebridge image?

Thanks