docs: persist isolated 8081 startup workflow

scripts/start_local_dashboards.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+
+cd "${ROOT_DIR}"
+docker compose up -d
+"${ROOT_DIR}/scripts/start_8081.sh"
+
+echo "8080: http://localhost:8080"
+echo "8081: http://localhost:8081"