docker / buildx

Security considerations

This outline will cover security considerations for Buildx.

Vulnerability Scanning

  • Integration with Vulnerability Scanners: Buildx integrates with popular vulnerability scanners such as Clair and Anchore.
  • Scanning during Build: Integrate vulnerability scanning into the build process to identify vulnerabilities early.
  • Example:
docker buildx build --push --platform linux/amd64,linux/arm64 --secret id=mysecret,src=secret.txt --progress plain --build-arg SCAN=true --tag my-image:latest .

Source: docs/reference/buildx_build.md

Image Signing

  • Signing Images: Buildx supports image signing using Docker Content Trust.
  • Verification: Verify signed images before deploying them to ensure their integrity and authenticity.
docker buildx build --push --platform linux/amd64,linux/arm64 --secret id=mysecret,src=secret.txt --progress plain --build-arg SCAN=true --tag my-image:latest .
          docker trust push my-image:latest

Source: https://docs.docker.com/engine/security/trust/

Access Control

  • Restrict Access: Utilize access control mechanisms like role-based access control (RBAC) to limit access to Buildx resources.
  • Example:
docker buildx build --push --platform linux/amd64,linux/arm64 --secret id=mysecret,src=secret.txt --progress plain --build-arg SCAN=true --tag my-image:latest .

Source: docs/reference/buildx_build.md

Other Security Considerations

  • Image Provenance: Ensure the origin and integrity of images through features like image provenance.
  • Container Security: Implement best practices for securing containers, including vulnerability scanning, image signing, and least privilege.
  • Environment Security: Secure the build environment by using secure build tools, limiting access, and enforcing security policies.

Best Practices

  • Use Secure Build Environments: Build images in secure and isolated environments to reduce the risk of vulnerabilities.
  • Regularly Update: Update Buildx and its dependencies to benefit from security patches and improvements.
  • Limit Privileges: Run Buildx with the least privileges possible.
  • Audit and Monitor: Continuously monitor Buildx activity and logs to detect suspicious behavior.
  • Review and Adapt: Periodically review and adjust your security measures to stay up-to-date with best practices and emerging threats.

References