Fix path problem in run script when executed elsewhere

start.sh

@@ -1,13 +1,17 @@
 #!/bin/bash
 
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+
 if [ "$1" == "prepare" ]
 then
     echo "Preparing your system for the first run"
     apt update -y && apt upgrade -y
     apt install python3.7 python3-pip -y
     pip3 install setuptools wheel regex
+    cd $DIR
     pip3 install -r requirements.txt
     python3 main.py helloworld run
 else
+    cd $DIR
     python3 main.py "$@"
 fi