Update Xvfb

notebooks/unit1/unit1.ipynb

@@ -1,15 +1,5 @@
 {
   "cells": [
-    {
-      "cell_type": "markdown",
-      "metadata": {
-        "id": "view-in-github",
-        "colab_type": "text"
-      },
-      "source": [
-        "<a href=\"https://colab.research.google.com/github/huggingface/deep-rl-class/blob/main/notebooks/unit1/unit1.ipynb\" target=\"_parent\"><img src=\"https://colab.research.google.com/assets/colab-badge.svg\" alt=\"Open In Colab\"/></a>"
-      ]
-    },
     {
       "cell_type": "markdown",
       "metadata": {
@@ -260,7 +250,7 @@
       "cell_type": "code",
       "source": [
         "!sudo apt-get update\n",
-        "!apt install python-opengl\n",
+        "!sudo apt-get install -y python3-opengl\n",
         "!apt install ffmpeg\n",
         "!apt install xvfb\n",
         "!pip3 install pyvirtualdisplay"
@@ -1169,8 +1159,7 @@
       "collapsed_sections": [
         "QAN7B0_HCVZC",
         "BqPKw3jt_pG5"
-      ],
-      "include_colab_link": true
+      ]
     },
     "gpuClass": "standard",
     "kernelspec": {