What is Docker Scout and how to use it for scanning image vulnerabilities?

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Docker Scout is a modern security tool built into the Docker ecosystem that is designed to automatically analyze images for known vulnerabilities and configuration errors. It helps developers find vulnerable packages and libraries at early stages of application creation.

The tool continuously scans the layers of the built image, checking their content against up-to-date global vulnerability databases. Unlike third-party alternatives, Docker Scout is deeply integrated into the build process and provides detailed recommendations for fixing issues, including pointing out specific versions of base images free from vulnerabilities.

Using this tool significantly reduces the risks of introducing vulnerable code into the production environment and automates security checks at the continuous integration stage.

1. Log in to Docker Hub from the command line using the docker login utility to access scanning features.
2. Build your image as usual using the docker build command.
3. Run the local image analysis with the docker scout cves command, specifying the name and tag of your creation.
4. Review the generated report, paying attention to critical and high severity vulnerabilities, and update outdated dependencies in the original Dockerfile.

Regular use of the scanner allows you to maintain an up-to-date level of application protection and quickly respond to new vulnerabilities appearing in third-party libraries used in your project.

What is Docker Scout and how to use it for scanning image vulnerabilities?

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