SDK-783: Update README to mention needing Python 3+. Change Dockerfile to only have one CMD command

Author: echarrod

README.md

@@ -256,7 +256,8 @@ To run the Flask or Django container:
 
 #### Django
 
-1. Change directories to the Django project: `cd examples/yoti_example_django`
+1. You will need Python 3+ to run the Django example
+1. Change directories to the ` project: `cd examples/yoti_example_django`
 1. Install dependencies: `pip install -r requirements.txt`
 1. Apply migrations before the first start by running: `python manage.py migrate`
 1. Run: `python manage.py runsslserver 0.0.0.0:5000`

examples/yoti_example_django/Dockerfile

@@ -11,5 +11,6 @@ RUN pip install --no-cache-dir -r requirements.txt
 ENV YOTI_APPLICATION_ID $YOTI_APPLICATION_ID
 ENV YOTI_CLIENT_SDK_ID $YOTI_CLIENT_SDK_ID
 ENV YOTI_KEY_FILE_PATH $YOTI_KEY_FILE_PATH
+
 CMD ["python", "manage.py", "migrate"]
-CMD ["python", "manage.py", "runsslserver", "0.0.0.0:5000"]
+ENTRYPOINT ["python", "manage.py", "runsslserver", "0.0.0.0:5000"]