In which scenarios is it recommended to use multi-stage Docker builds to optimize the container creation process?

Multi-stage Docker build is recommended in the following scenarios:

• Optimizing the size of the final image: the application is built in the first stage with a full set of tools and dependencies, and only the necessary artifacts are copied in subsequent stages into a minimal image.
• Isolation of build stages: allows separating the build environment from the runtime environment, which increases security and reduces vulnerabilities.
• Simplifying maintenance and updates: it is easy to change the base images for building and running without affecting each other.

Example for Python:

# Build stage
FROM python:3.10-slim as builder
WORKDIR /app
COPY requirements.txt .
RUN pip install --user -r requirements.txt
COPY . .

# Final image stage
FROM python:3.10-alpine
WORKDIR /app
COPY --from=builder /root/.local /root/.local
COPY --from=builder /app .
ENV PATH=/root/.local/bin:$PATH
CMD ["python", "app.py"]

This approach reduces the image size and separates build dependencies from the runtime environment.