Dockerfile

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These real terminal captures use a historical development build. They are not current release certification; independent output review and current installed-wheel scenario checks remain pending.

Overview

This worked example compares Dockerfile. Advertised filename extensions: Dockerfile.

What changes

Replace node:18 single stage with two node:18-alpine stages; install production dependencies with npm ci from package manifests in builder, copy node_modules into final stage, copy source, and add EXPOSE 3000; retain workdir and CMD.

Before

FROM node:18
WORKDIR /app
COPY . .
RUN npm install
CMD ["node", "index.js"]

After

FROM node:18-alpine AS builder
WORKDIR /app
COPY package*.json ./
RUN npm ci --only=production

FROM node:18-alpine
WORKDIR /app
COPY --from=builder /app/node_modules ./node_modules
COPY . .
EXPOSE 3000
CMD ["node", "index.js"]

Things to know

• Base OS and dependency installation semantics change; npm ci requires a compatible lockfile.

• COPY . . can copy local node_modules unless excluded; no .dockerignore is supplied.

• EXPOSE declares metadata and does not itself publish a port.

Recorded output

Recorded from a real native CLI through rs-rich-record. A refactoring label does not prove equivalent behavior. Build identities.

Scenario coverage

Scenario	Status
Meaningful edit	Source example reviewed; output captured; independent result certification pending
Unchanged content	Not yet certified for this candidate
Populate / clear a file	Not yet certified for this candidate
Add / delete an entity	Not yet certified for this candidate
Rename a symbol	Not yet certified for this candidate
Move / reorder code	Not yet certified for this candidate
Formatting only	Not yet certified for this candidate
Git file rename / move	Not yet certified for this candidate
Mixed move and edit	Not yet certified for this candidate
Invalid syntax / actionable error	Not yet certified for this candidate
Guardrail review	Not yet certified for this candidate

Try it

Save the two source blocks as separate files with the shown extension, then compare them:

intentumdiff file before/Dockerfile after/Dockerfile

The installed Python wheel includes its parser components. The native CLI requires a component directory. Compare the result with the source change described above; agreement between APIs alone is not proof of correctness.