Update install.sh

install.sh

@@ -1,4 +1,6 @@
-#!/bin/bash
-:contentReference[oaicite:7]{index=7}
-:contentReference[oaicite:8]{index=8}
-:contentReference[oaicite:9]{index=9}
+#!/usr/bin/env bash
+set -e
+
+pip install --upgrade pip
+pip install --upgrade websockets>=13.0
+pip install --no-cache-dir -r requirements.txt