chore (service): update grafana readme

.gitignore

@@ -1,2 +1,3 @@
 .env
 .env.*
+.docker-compose.yml.kate*

services/grafana/README.md

@@ -4,6 +4,28 @@
 docker-compose-up -d
 ```
 
+Check which containers are connected to the Docker network:
+
+```sh
+docker network inspect web
+```
+
+List networks:
+
+```sh
+docker network ls
+```
+
+Using new Docker Compose syntax:
+
+```sh
+docker compose up -d
+```
+
+```sh
+docker compose --env-file .env.prd up -d
+```
+
 ### Prometheus
 
 The tool that serves as the data source for the Grafana representation layer.