Container based on Alpine Linux 3.12 cannot install android tools 
Hi, when I deployed container based on Alpine Linux 3.12 (oznu/docker-homebridge:latest) on Synology, I cannot use the [homebridge-adb] plugin. Because there aren't [android tools] for Alpine 3.12 but for 3.14. Can you upgrade the Alpine Linux version to fix this problem?

![iShot2022-01-04 18.50.52.png](https://s2.loli.net/2022/01/04/dh5RvbjWsQIxE8r.png)
![iShot2022-01-04 18.57.07.png](https://s2.loli.net/2022/01/04/qVfoZvM3n2OeaYP.png)

refer to:
① https://github.com/dwaan/homebridge-adb/issues/25
② https://pkgs.alpinelinux.org/packages?name=android-tools&branch=v3.14