Dockerfile Linter Online

Paste a Dockerfile and lint it with hadolint: every finding by line, with the rule it breaks.

The check runs on Cariara's code runner once you sign in.

In the editor

  • Standard input, and your own test cases with expected output, compared line by line
  • Check: the language's linter, its findings marked in the code
  • Explain: a note on the line under the cursor (signed in)
  • Your code, input and test cases kept in this browser

Other languages

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