Dockerfile check

Checks a Dockerfile against reliability rules without running a build: pinned image and package versions, apt cache cleanup, sudo, JSON form of CMD and ENTRYPOINT, pipefail in pipelines, COPY instead of ADD for local files, COPY --from pointing at an unknown stage, the last user being root, consecutive RUN instructions and the deprecated MAINTAINER. Every finding carries a rule code, a level and a line number, and the result can be downloaded as CSV.

Fill in the fields, run the tool and review the result. Your input is not added to a public page. Use the learning mode for calculation details.