docs(docker-compose): Add pull instructions

docker-compose/examples/grafana/README.md

@@ -28,6 +28,14 @@ On your deployment machine create the necessary Docker context to connect to and
 docker context create fully.qualified.domain.name --docker 'host=ssh://root@fully.qualified.domain.name'
 ```
 
+## Pull
+
+Pull images from Docker Hub verbatim.
+
+```
+docker compose --project-name "${COMPOSE_PROJECT}" --file "${COMPOSE_FILE}" --env-file "${COMPOSE_ENV}" --profile 'full' pull
+```
+
 ## Start
 
 ```