How do you dockerize a Django application, and what does a typical Dockerfile look like? Django एप्लिकेशन को Docker में कैसे पैकेज करें, और एक सामान्य Dockerfile कैसा दिखता है?

Dockerizing Django packages the application, its exact Python dependencies, and system libraries into a single portable image that runs identically across a developer's laptop, CI pipeline, and production servers, eliminating "works on my machine" environment drift.

A typical Dockerfile starts from a slim Python base image, installs dependencies from requirements.txt (cached as a separate layer so code changes don't force a full dependency reinstall), copies the application code, runs collectstatic, and starts Gunicorn instead of runserver. This is usually paired with docker-compose for local development to also run PostgreSQL and Redis as separate linked containers.

FROM python:3.12-slim
WORKDIR /app
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt
COPY . .
RUN python manage.py collectstatic --noinput
CMD ["gunicorn", "myproject.wsgi:application", "--bind", "0.0.0.0:8000"]