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Docker Scout analyzes container-image contents: it builds a software bill of materials (SBOM), matches package information against vulnerability data, and presents findings, image-composition details, policy results, and remediation suggestions. You can try it locally with the CLI or Docker Desktop, or use it in a repository and CI workflow. Those routes differ in setup and data handling, so the right evaluation starts with what you want Scout to inspect.
What is Docker Scout?
Docker Scout is a developer-facing image and software-supply-chain analysis service. Docker describes a workflow that inventories image contents as an SBOM, then checks that inventory against a continuously updated vulnerability database. Findings can be viewed through the CLI, Docker Hub, and the Scout Dashboard; Docker also describes layer-level context and remediation guidance. See Docker’s Scout overview and its product page.
This is analysis of image artifacts and their package metadata, not evidence that Scout is a runtime detection agent. Docker’s documentation points separately to runtime-environment monitoring. Treat claims about efficiency or protection as product descriptions, not independently measured results.
How do I scan a Docker image for vulnerabilities?
A quick local check can start with the Scout CLI. With Docker Desktop, the Scout CLI plugin is included; Docker documents standalone installation for Docker Engine users who do not use Desktop. It is also available as a container image and a GitHub Action. Docker says Scout integrates with CI systems including Jenkins, GitLab, and Azure DevOps. The product documentation and cheat sheet identify Desktop version 4.17.0 as the version from which the plugin has been included; consult the installation guide for current version-specific instructions.
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- Sign in: Sign in to a Docker account.
- Build and push: Build an image and push it to a registry for the repository workflow in Docker’s quickstart.
- Enable repository analysis: Enroll the organization and enable analysis for the repository if you want ongoing reassessment of pushed images.
- Run a vulnerability scan: Run
docker scout cvesagainst the image you want to examine. The command reports vulnerability findings based on the image’s package inventory. - Review policy status if useful: Run
docker scout quickviewto inspect a concise policy view. The quickstart also demonstrates updating an affected dependency, rebuilding the image, and scanning again.
The quickstart illustrates the process using Express and CVE-2022-24999. That is an example, not an assertion that the CVE affects a current image. For command options and the status of individual commands, see the CLI reference.
What can Scout tell you beyond CVEs?
Scout’s command set includes cves, sbom, quickview, recommendations, policy, compare, attestation, and integration commands. Docker’s current CLI reference marks policy and compare experimental, along with some environment and stream features, so do not assume every command has the same stability status.
Policy checks can cover more than known vulnerabilities. Docker’s quickstart demonstrates checks for license restrictions, default non-root configuration, vulnerability severity, base-image freshness, and supply-chain attestations. Their usefulness depends on the metadata available for the image. In the walkthrough, some checks cannot be fully evaluated because the image has no SBOM or provenance attestations.
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Can Docker Scout run in CI?
Yes. In addition to local CLI use, Docker documents a Scout container image and GitHub Action, and describes integrations with Jenkins, GitLab, and Azure DevOps. That gives teams options for adding image checks to a build or delivery workflow; the specific setup depends on the CI system and where its images are available. The installation guide documents the supported entry points.
For most use cases, Docker says policy evaluation can run locally in the CLI: it indexes the image into an SBOM, enriches it with CVE and VEX data, then evaluates configured policies in process. Docker says this mode does not send data to the Scout service and does not require an organization. That local policy run is distinct from enabling repository analysis, which has its own organization setup and metadata storage behavior.
Does Docker Scout store image data?
Docker distinguishes one-off analysis from repository analysis. A one-off CLI or Docker Desktop analysis does not store image data, according to its image-analysis documentation. When analysis is enabled for a repository, new pushed images are analyzed and Scout stores a metadata snapshot. It can reassess that snapshot as vulnerability information changes, without needing to analyze the image again for every newly disclosed CVE.
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- Docker Hub is integrated by default.
- Third-party registries must first be integrated with the Docker organization.
- An organization Editor or Owner can activate repository analysis.
In this context, “ongoing” means reassessing repository image metadata against changing vulnerability information; it should not be read as live monitoring of software running in production.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Is Docker Scout included with Docker Desktop?
Docker Desktop includes the Scout CLI plugin. Docker’s product page and cheat sheet say the plugin has been included since Desktop version 4.17.0. Docker Engine users without Desktop can install Scout separately, and Docker also documents the container image and GitHub Action. Check the installation guide for current requirements and instructions.
How much does Docker Scout cost?
Docker’s overview states that a Personal subscription includes up to one repository. Docker’s general plan documentation says Personal is free for individual developers and that Pro, Team, and Business add expanded usage or features. The available documentation does not establish a complete current Scout repository limit or Scout-specific price for every paid tier. Check Docker’s plan documentation and live pricing information for the current offer and your account context; do not infer that every Scout capability or repository limit is free from the Personal-plan statement alone.
How should you evaluate Scout?
Start with the image and workflow you actually need to assess. A local scan is a straightforward way to inspect package findings without enabling repository analysis. If your goal is recurring reassessment of pushed images, check the repository, organization, and registry setup as well as the metadata-retention behavior. If policy checks matter, include the image’s SBOM and provenance data in the test: a check that lacks required metadata cannot provide a complete result.
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