register and sign in pages

backend/Dockerfile

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+# Development image. Production is built from .build/prod/api.Dockerfile.
+FROM python:3.12-slim
+
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1
+
+WORKDIR /app
+
+RUN apt-get update \
+ && apt-get install -y --no-install-recommends netcat-openbsd \
+ && rm -rf /var/lib/apt/lists/*
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# The source is bind-mounted over this in compose.
+COPY . .
+
+EXPOSE 8000
+CMD ["python", "manage.py", "runserver", "0.0.0.0:8000"]