What step should you take to ensure only trusted container images are deployed in GKE?

Configuring Binary Authorization in GKE clusters is a critical step in ensuring that only trusted container images are deployed. Binary Authorization is a deployment security feature that helps you enforce security policies for your application's container images. By using this service, organizations can define policies that require images to be signed and verified before they are allowed to run in a Kubernetes cluster. If an image does not meet the specified criteria, it will be rejected during the deployment process.

This capability is essential for maintaining the integrity and security of your applications, as it helps prevent potentially malicious or unverified code from being executed in your production environment. Organizations can establish trust by requiring that only images bearing the appropriate signatures from known and trusted sources are deployed, thus enhancing the overall security posture of the cloud-native applications running in GKE.

The other options, while they may pertain to different aspects of container management and security, do not focus directly on ensuring that only trusted images are deployed. Granting roles to the Cloud Build service account helps in managing permissions related to cloud builds but does not address image verification itself. Creating a custom validator with Cloud Run involves writing functions to validate app code but does not specifically relate to GKE image deployments. Running Kritis, a tool for image validation using policy enforcement