At this time, the build image that Harness uses is predefined and the only way to modify them is via API endpoints (https://developer.harness.io/docs/database-devops/overview/#configure-harness-db-devops-image-versions)

For customers that have stricter security requirements, the default image may not always fulfill their needs such that it would be great if they could declare a specific image version when executing DB DevOps workflows in their pipelines.