New review comment by endigma on void-packages repository

https://github.com/void-linux/void-packages/pull/29326#discussion_r592906486

Comment:
> The meta-package is appropriate, but it can still be added as a subpackage of `docker-cli` by putting the following function in your `docker-cli` template:
> 
> ```shell
> docker_package() {
> 	build_style="meta"
> 	short_desc="Docker container runtime"
> 	depends="${sourcepkg}>=${version}_${revision} moby"
> }
> ```
> 
> and make `srcpkgs/docker` a symbolic link to `docker-cli`.

Implemented.