Error: No hadolint failure but Actions job fails about hadolint-action HOT 16 CLOSED

The problem seems to be, that some errors/warnings/infos are not displayed in the log.
I have a Dockerfile which doesn't contain any ignore statements.
In my first run, my .hadolint.yaml only contains the exclusion for DL3018.
If I run Hadolint from CLI, I get the message:

Dockerfile:13 DL3059 info: Multiple consecutive `RUN` instructions. Consider consolidation.

But in the CI, no message is displayed but the step fails.

If I add the exclusion for DL3059, the CI step succeeds.

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I have this problem too

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Same problem an currently no solution 😢

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I hate to leave me too messages - but me too :)

Also I believe that if you write the report to file it also is empty

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Same here.
Had to switch back to v2.0.0, this works fine.

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I've been experiencing this same issue for a couple of months. Is this project still maintained? Last activity seems to be in May.

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I found that if you re-run the job with debug logging enabled you will see some output.

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For me it worked to set failure-threshold to error or warning

According to the documentation, the default is info. I don´t know how this works internally in Hadolint, but my theory, is that info is making the pipeline fail with any output, even if it has no errors.

Ex:

 - name: Lint Dockerfile
    uses: hadolint/[email protected]
    with:
      dockerfile: Dockerfile
      failure-threshold: error

error should probably be the default value, as I think this is what most people would like to fail the pipeline and then they could override to warning for a more strict workflow.

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Not sure but this seems to be related to #55

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This issue has been fixed by the 3.0.0 release for us (we also pinned at 2.0.0 to avoid having this problem).

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I still have it on 3.0.0 and even on master : https://github.com/dunglas/symfony-docker/actions/runs/3765268860/jobs/6400565741

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You need to set output-file to /dev/stdout.

I added a PR for this at #71

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Setting v3.0.0 up tonight, and it fails like many people are mentioning above, unless I explicitly include failure-threshold: error:

    steps:
      - name: Checkout code
        uses: actions/checkout@v3
      - name: Run Hadolint on Dockerfile
        uses: hadolint/[email protected]
        with:
          dockerfile: Dockerfile
          # it will fail with no error if I omit this...
          failure-threshold: error

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@humphd please use 3.1.0 and the error messages should be visible

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I created a PR at #75 to ensure people are not copying v3.0.0 from the README.md

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@DracoBlue that's excellent, thank you for the info and fixing the README. Appreciated.

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