In am using jsonnet to create docker compose file. I am at just initial stages, and I need an alias &image because I will reuse this in other section later.

function(spec, service) {
  version: spec.version.compose_version,
  services: {
    [service + '-primary']: {
      image: '&image ' + spec.registry + '/' + service  ':' + spec.version
    }
  }
}

But this will output

"services":
  "ourproduct-primary":
    "image": "&image mycompany.com/ourproduct:${VERSION:-master}"
"version": "3.9"

I think this is not valid as &image and the link are both enclosed in same double quotes, I don’t know how to solve.

Also is there a way to remove the double quotes? So it would look like this?

version: '3.9'

services:
  ourproduct-primary:
    image: &image mycompany.com/ourproduct:${VERSION:-master}

I am using manifestYamlDoc

function(spec){
  ['compose.%s.yaml' % service]: std.manifestYamlDoc(services[service](spec, service))
  for service in spec.services
}