FR: ability to re-use the variables defined in the gradle project

[evmin]

Would like to be able to reference gradle project variables. Something like that:

version: '2'
services:
  my-service:
    container_name: container
    image: "my/image:{{version}}"

Currently I get

> Failed to resolve Docker dependencies declared in project/docker-compose.yml.template: [{{version}}]. Known dependencies: {}