easy5 pts · first answer countsdockerbuild-optimization

Ordering Dockerfile steps for caching

This Node.js Dockerfile reinstalls all dependencies on every code change, making builds slow. What is the best fix?

FROM node:22-alpine
WORKDIR /app
COPY . .
RUN npm ci
CMD ["node", "server.js"]

A.Replace npm ci with npm install so it reuses node_modules.B.Add --no-cache to the docker build command.C.Copy package.json and package-lock.json first, run npm ci, then copy the rest of the source code.D.Move the CMD line to the top of the file.

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Ordering Dockerfile steps for caching

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