medium10 pts · first answer countsdockerci-cd

Slow image builds

Every small code change triggers a full reinstall of Python packages in this Dockerfile. How do you fix it?

FROM python:3.12-slim
WORKDIR /app
COPY . .
RUN pip install -r requirements.txt
CMD ["python", "serve.py"]

A.Use a larger base imageB.Copy requirements.txt first and run pip install, then copy the rest of the code, so the dependency layer is cachedC.Add --no-cache-dir to every commandD.Move CMD to the top of the file

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