Docker Optimizer

DockerfilePaste the current container recipe

Optimized outputSuggested tightened version

FROM node:latest
WORKDIR /app
COPY . .
RUN npm ci
RUN npm run build
CMD ["npm", "start"]

USER node

Quality score39/100

Findings5

FindingsSeverity-ranked checks

Pin the base image more tightly

Using the latest tag makes rebuilds drift over time. Prefer a versioned image tag.

Prefer npm ci for repeatable installs

npm ci is more deterministic for CI and image builds when a lockfile exists.

Consider a multi-stage build

Build steps and runtime layers can often be split to keep production images leaner.

Drop root where possible

Running as a non-root user reduces blast radius for runtime issues.

Add a health check

A HEALTHCHECK improves container observability and orchestration feedback.

Local review

This tool lint-checks the Dockerfile in your browser only. It is meant to surface obvious build and runtime hygiene issues quickly before CI.

These are the practical situations where this workflow usually earns its keep.

You need to review a Dockerfile for image-size and layer-hygiene opportunities.

You want a browser-local pass before turning the findings into a smaller, safer Docker build plan.

You need a smaller, cleaner review surface during container build review and performance cleanup.

These are the checks that usually keep the output useful instead of misleading.

Optimization suggestions should still be checked against the application’s actual runtime and security requirements.

Using a summary as a substitute for reading the source artifact when the change is high risk.

Forgetting that generated snippets and reviews may need project-specific edits before use.

These tools often appear right before or right after this workflow.