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Vibe codingHardvc-g165
Subject Ai code reviewLevel Senior–Staff~18 minCommon in Security interviewsIndustries Software development

Question

An AI assistant produced this Dockerfile to "build the app and pull private npm packages." The image works and the build passes. A security engineer says the token is still in the image. How?

dockerfile
FROM node:20WORKDIR /appARG NPM_TOKENRUN echo "//registry.npmjs.org/:_authToken=${NPM_TOKEN}" > ~/.npmrcCOPY package*.json ./RUN npm ciRUN rm ~/.npmrcCOPY . .RUN npm run buildCMD ["node", "dist/server.js"]
What a strong answer looks like

Treat the AI’s output as a draft to verify, not an answer to trust. Name the specific flaw and the input that triggers it, say how you’d catch it — tests, edge cases, reading critically — and how you’d re-prompt or decompose to get it right.

Learn the concepts
Describe your solution

Vibe coding: describe the solution in plain language (or narrate it) and the coach grades your approach. Generating runnable code from your description is coming next.

Run or narrate your approach, then ask the coach.