add traefik label (temporarily) for internal ldv-spec prometheus

ldvspec/docker/docker-compose-dev-cd.yml

@@ -72,6 +72,13 @@ services:
       - ldv-spec-db
     networks:
       - ldv_network
+      - traefik_proxy
+    labels:
+      - "traefik.enable=true"
+      - "traefik.http.routers.ldv-spec-prometheus.entryPoints=websecure"
+      - "traefik.http.routers.ldv-spec-prometheus.service=ldv-spec-prometheus"
+      - "traefik.http.routers.ldv-spec-prometheus.rule=Host(`sdc-dev.astron.nl`) && PathPrefix(`/ldv-spec-prometheus`)"
+      - "traefik.http.services.ldv-spec-prometheus.loadbalancer.server.port=9090"
 
   ldv-specification:
     container_name: ldv-specification