udpating installation documentation with python virtual environment

doc/Installation.md

@@ -50,20 +50,29 @@ exit
 ```
 Then proceed with to clone and install the software itself. 
 
+For running everything in a Virtual Python environment run:
+```
+apt-get install python3-venv
+python3 -m venv /opt/CodeGrader_venv/
+```
+
 ```
 cd /opt
 rm -r /opt/CodeGrader
 git clone https://github.com/ooemperor/CodeGrader.git
 cd CodeGrader
-pip install -r ./codeGrader/frontend/requirements.txt
-pip install -r ./codeGrader/backend/requirements.txt
+/opt/CodeGrader_venv/bin/python3.11 -m pip install -r ./codeGrader/frontend/requirements.txt
+/opt/CodeGrader_venv/bin/python3.11 -m pip install -r ./codeGrader/backend/requirements.txt
 cd /opt/CodeGrader
 mv setup_full.py setup.py
-pip install .
+/opt/CodeGrader_venv/bin/python3.11 -m pip install .
 ```
 
-If you are running some Version of python higher than 3.9, it could be that there is an Error about Externally Managed python. 
-You can resolve this by running: 
+Everything that you run from right now on, that are scripts such as ```cgAddAdmin``` needs to be run from the python venv 
+with ```/opt/CodeGrader_venv/bin/cgAddAdmin```. This ensures proper execution within the Virtual Environment. 
+
+If you are running some Version of python higher than 3.9 without Virtual Environment, it could be that there is an Error about Externally Managed python. 
+You can resolve this by running (not recommended): 
 ```
  rm -rf /usr/lib/python3.11/EXTERNALLY-MANAGED
 ```