metrics: expose localhost for scraping some local resources by prom

docker-compose-metrics.yaml

@@ -70,6 +70,8 b' services:'
 #      - "9090:9090"
     networks:
       - rhodecode_network
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
     volumes:
       - ./config/prometheus:/etc/prometheus
       - prometheus_data:/prometheus
@@ -87,6 +89,8 b' services:'
       - ./config/grafana:/etc/grafana
     networks:
       - rhodecode_network
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
     labels:
       - "traefik.enable=true"
       - "traefik.http.routers.grafana.entrypoints=http"
@@ -111,6 +115,8 b' services:'
     ]
     networks:
       - rhodecode_network
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
     volumes:
       - ./config/loki:/etc/loki
       # optionally mount host container to scrape docker logs...