Docker image for Elm Test.
$ docker pull aminnairi/elm-test
$ docker rmi aminnairi/elm-test
$ docker run aminnairi/elm-test --version
$ docker run --volume "$(pwd)":/home/elm/app aminnairi/elm-test init
$ docker run --volume "$(pwd)":/home/elm/app aminnairi/elm-test tests/**/*.elm
$ docker run aminnairi/elm-test --help