New review comment by ahesford on void-packages repository

https://github.com/void-linux/void-packages/pull/29326#discussion_r592899086

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`.