I'm looking for tools that can help scan my Dockerfile for various issues, such as outdated containers and security vulnerabilities. What options do you recommend for effectively identifying these problems?
5 Answers
Hadolint is my go-to for linting Dockerfiles. It works similarly to other linters, using rule names like DL3003, and you can create custom ignore lists. Plus, it’s part of the super-linter package, making it super convenient!
Grype is definitely worth checking out! It's aware of common issues and can track outdated components and language-specific library vulnerabilities. Very useful for both your own containers and third-party ones.
Exactly! Even if the OP is asking for something else, Grype is the right choice to go with.
For scanning containers, I've used tools like AquaSec and Clair. While you can find specific Dockerfile parsers, it’s better to focus on scanning the actual container image itself for comprehensive results.
I typically use Docker Scout for scanning, but I follow up with Trivy since they sometimes report different vulnerabilities. It’s handy to catch everything! Plus, I use Hadolint for linting and Snyk to handle vulnerability scans.
Trivy is a great tool for scanning, but I've noticed it mainly checks the base image and may miss vulnerabilities you create in your own layers. Just something to keep in mind if you're using it!
That’s good to know! I'm planning to start using it, but I’ll keep this limitation in mind.
Yeah, I came here to mention Hadolint too! It's really helpful.