Custom Labels for Routers/Services [Docker]

Traefik Traefik v2
1

Hi,

I was wondering if there is a way to attach custom labels to a router or a service. In particular, when I go to /api/http/routers I see all of my routers. As an example here's one:

{
  "entryPoints": [
    "http"
  ],
  "middlewares": [
    "path-strip@docker"
  ],
  "service": "fooar",
  "rule": "PathPrefix(`/foobar`)",
  "status": "enabled",
  "using": [
    "http"
  ],
  "name": "foobar@docker",
  "provider": "docker"
}

But what I'd like is to have some way to label certain routers with metadata (keys & values) so that I can identify services. For example, I'm wondering if I can attach some docker label to my docker service in order to add some kind of field to the above router like:

{
 ...
   "custom_labels": {
     "uses_gpu": true,
     "language": "en"
  }
 ...
}

Thanks in advance for any information!