ops: wire monitoring stack to traefik metrics

traefik/docker-compose.yml

@@ -19,6 +19,12 @@ services:
       - --entrypoints.web.http.redirections.entrypoint.permanent=true
       - --entrypoints.websecure.address=:443
       - --entrypoints.websecure.http.tls=true
+      - --entrypoints.metrics.address=:8082
+      - --metrics.prometheus=true
+      - --metrics.prometheus.entrypoint=metrics
+      - --metrics.prometheus.addentrypointslabels=true
+      - --metrics.prometheus.addrouterslabels=true
+      - --metrics.prometheus.addserviceslabels=true
       - --certificatesresolvers.le.acme.email=mi.kaleschke@gmx.de
       - --certificatesresolvers.le.acme.storage=/letsencrypt/acme.json
       - --certificatesresolvers.le.acme.dnschallenge=true
@@ -39,6 +45,7 @@ services:
     networks:
       - frontend_net
       - backend_net
+      - monitoring_net
     labels:
       - traefik.enable=true
       - traefik.docker.network=frontend_net
@@ -58,6 +65,8 @@ networks:
     external: true
   backend_net:
     external: true
+  monitoring_net:
+    external: true
 
 secrets:
   cloudflare_dns_api_token: