Validate Dockerfiles - Hadolint Linter | Online Free DevTools by Hexmos

Validate Dockerfiles with Hadolint, a Dockerfile linter. Detect errors and enforce best practices in your Docker configurations. Free online tool, no registration required.

hadolint

Dockerfile linter. More information: https://github.com/hadolint/hadolint.

Lint a Dockerfile:

hadolint {{path/to/Dockerfile}}

Lint a Dockerfile, displaying the output in JSON format:

hadolint --format {{json}} {{path/to/Dockerfile}}

Lint a Dockerfile, displaying the output in a specific format:

hadolint --format {{tty|json|checkstyle|codeclimate|codacy}} {{path/to/Dockerfile}}

Lint a Dockerfile ignoring specific rules:

hadolint --ignore {{DL3006}} --ignore {{DL3008}} {{path/to/Dockerfile}}

Lint multiple Dockerfiles using specific trusted registries:

hadolint --trusted-registry {{docker.io}} --trusted-registry {{example.com}}:{{5000}} {{path/to/Dockerfile1 path/to/Dockerfile2 ...}}

return

See Also

← Back to common commands ← tldr 🙏 Credits & Acknowledgments