Add alerts for graph-node subgraphs (#821)

Part of [Deploy v2 and updated v3 sushiswap subgraphs](https://www.notion.so/Deploy-v2-and-updated-v3-sushiswap-subgraphs-e331945fdeea487c890706fc22c6cc94)

Reviewed-on: cerc-io/stack-orchestrator#821
Co-authored-by: Prathamesh Musale <prathamesh.musale0@gmail.com>
Co-committed-by: Prathamesh Musale <prathamesh.musale0@gmail.com>

stack_orchestrator/data/compose/docker-compose-grafana.yml

@@ -6,10 +6,16 @@ services:
     restart: always
     environment:
       GF_SERVER_ROOT_URL: ${GF_SERVER_ROOT_URL}
+      CERC_GRAFANA_ALERTS_SUBGRAPH_IDS: ${CERC_GRAFANA_ALERTS_SUBGRAPH_IDS}
     volumes:
       - ../config/monitoring/grafana/provisioning:/etc/grafana/provisioning
       - ../config/monitoring/grafana/dashboards:/etc/grafana/dashboards
+      - ../config/monitoring/update-grafana-alerts-config.sh:/update-grafana-alerts-config.sh
       - grafana_storage:/var/lib/grafana
+    user: root
+    entrypoint: ["bash", "-c"]
+    command: |
+      "/update-grafana-alerts-config.sh && /run.sh"
     ports:
       - "3000"
     healthcheck: