Packer Docker GCP

[david foley]

Hi All, 

I'm trying to figure out how i can push to GCP Container Register via Packer.

source "docker" "example" {

    image = "ubuntu"

    export_path = "image.tar"

}

build {

  sources = ["source.docker.example"]

post-processors {

post-processor "docker-tag" {

    repository = "gcr.io/<project>/python"

    tag        = ["2.1"]

  }

post-processor "docker-push"{

    login = file(".json")

    login_server = "gcr.io"

}

}

}