2017/12: times have changed and the author now provides a very nice Docker image: https://github.com/hadolint/hadolint

This container is smaller than the original one from Lukas Martinelli (96MB vs 1.7GB).

It's based on debian:jessie-slim and does the minimum.

• 1.2.1, latest (Dockerfile)

Usage is basically the following:

$ docker run --rm -i sjourdan/hadolint < Dockerfile

• N/A

$ make lint
$ make build

The Docker Hub build is building versions across tags, so tag releases properly:

$ git tag <hadolint version>
$ git push --tags