Django failed in build. Not found in env

Hi im using dockerfile to deploy my app. My Dockerfile

Use an official Python runtime as a parent image FROM python:3.11.9 Set environment variables ENV PYTHONDONTWRITEBYTECODE 1 ENV PYTHONUNBUFFERED 1 Set work directory WORKDIR /usr/src/app install system dependencies RUN apt-get update && apt-get upgrade -y && apt-get install -y netcat-openbsd gcc && apt-get clean Copy file COPY . /usr/src/app/ RUN pip install -r requirements/production.txt Collect static files and migrate RUN python manage.py collectstatic --noinput --settings=config.settings.production RUN python manage.py migrate --settings=config.settings.production Run the application CMD ["gunicorn", "--workers=3", "config.wsgi"]

It failed here

File "/usr/src/app/config/settings/production.py", line 14, in <module> SECRET_KEY = env("DJANGO_SECRET_KEY") ^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/local/lib/python3.11/site-packages/environ/environ.py", line 199, in call return self.get_value( ^^^^^^^^^^^^^^^ File "/usr/local/lib/python3.11/site-packages/environ/environ.py", line 392, in get_value raise ImproperlyConfigured(error_msg) from exc django.core.exceptions.ImproperlyConfigured: Set the DJANGO_SECRET_KEY environment variable

I already put the variables in the project