Update run.sh

Adding instructions to create a Python environment to run the code,  adding errors to ensure the installation of python >=3.8, pip, and virtualenv

run.sh

@@ -1,8 +1,43 @@
-#!/bin/sh
+#!/bin/bash
+SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
+
+# Create a virtual Python environment
 cd `dirname $0`
 
-pip install -r requirements.txt
+# Create a virtual environment to run our code
+VENV_NAME="venv"
+PYTHON="$VENV_NAME/bin/python"
+ENV_ERROR="This module requires Python >=3.8, pip, and virtualenv to be installed."
+
+if ! python3 -m venv --system-site-packages $VENV_NAME >/dev/null 2>&1; then
+    echo "Failed to create virtualenv."
+    if command -v apt-get >/dev/null; then
+        echo "Detected Debian/Ubuntu, attempting to install python3-venv automatically."
+        SUDO="sudo"
+        if ! command -v $SUDO >/dev/null; then
+            SUDO=""
+        fi
+		if ! apt info python3-venv >/dev/null 2>&1; then
+			echo "Package info not found, trying apt update"
+			$SUDO apt -qq update >/dev/null
+		fi
+        $SUDO apt install -qqy python3-venv >/dev/null 2>&1
+        if ! python3 -m venv $VENV_NAME >/dev/null 2>&1; then
+            echo $ENV_ERROR >&2
+            exit 1
+        fi
+    else
+        echo $ENV_ERROR >&2
+        exit 1
+    fi
+fi
+
+echo "Virtualenv found/created. Installing/upgrading Python packages..."
+if ! $PYTHON -m pip install -r requirements.txt -Uqq; then
+    exit 1
+fi
 
-# Be sure to use `exec` so that termination signals reach the python process,
+echo "Starting module..."
+# Be sure to use `exec` so that termination signals reach the Python process,
 # or handle forwarding termination signals manually
-exec python3 -m src.main $@
+exec ${SCRIPT_DIR}/venv/bin/python3 ${SCRIPT_DIR}/src/main.py $@