Dockerfile Linter Pro
Lint Dockerfiles for security, cache and bloat issues with rule ids and line numbers.
Paste a Dockerfile to lint it.
About this tool
Paste a Dockerfile and get hadolint-style findings with severity, rule id, line number and message. Covers untagged / latest FROM, missing USER (root warning), missing HEALTHCHECK, ADD-vs-COPY, apt-get without --no-install-recommends or apt-list cleanup, multi-RUN chaining hints, COPY . . overreach, privileged EXPOSE ports, missing WORKDIR, secret-shaped ENV values, MAINTAINER deprecation and an estimated layer/size footprint.