Add PYTHONDONTWRITEBYTECODE flag to local development Dockerfile

CONTRIBUTORS.rst

@@ -49,6 +49,7 @@ Listed in alphabetical order.
   Adam Dobrawy             `@ad-m`_
   Adam Steele              `@adammsteele`_
   Agam Dua
+  Agustín Scaramuzza       `@scaramagus`_               @scaramagus
   Alberto Sanchez          `@alb3rto`_
   Alex Tsai                `@caffodian`_
   Alvaro [Andor]           `@andor-pierdelacabeza`_

{{cookiecutter.project_slug}}/compose/local/django/Dockerfile

@@ -1,6 +1,7 @@
 FROM python:3.7-slim-buster
 
 ENV PYTHONUNBUFFERED 1
+ENV PYTHONDONTWRITEBYTECODE 1
 
 RUN apt-get update \
   # dependencies for building Python packages