Explanation
Deleting the image and running garbage collection on the Docker Trusted Registry will completely delete the image from disk. According to the official documentation, this is the recommended way to remove images and reclaim disk space.
References: https://docs.docker.com/ee/dtr/admin/manage-images/garbage-collection/

Explanation
Using 'docker service ps http' enables you to view the list of historical tasks for this service. The docker service ps command shows information about tasks associated with one or more services. A task is a slot where a container runs to execute a service's commands. A task can have different states in its lifecycle, such as new, running, complete, failed, etc. The docker service ps command shows all tasks by default, including historical ones. References: https://docs.docker.com/engine/reference/commandline/service_ps/,
https://docs.docker.com/engine/swarm/how-swarm-mode-works/services/

Explanation
Adding a volume to the pod that sets hostPath.path: /data, and then mounting this volume into the pod's containers as desired is a strategy that successfully accomplishes this. A hostPath volume mounts a file or directory from the host node's filesystem into a pod. It can be used to access files on the host from a container, such as configuration files, logs, binaries, etc. However, this type of volume is not portable across nodes and should be used with caution. References: https://kubernetes.io/docs/concepts/storage/volumes/#hostpath,
https://kubernetes.io/docs/tasks/configure-pod-container/configure-volume-storage/

Explanation
Scanning images to detect any security vulnerability is not a function of UCP. UCP stands for Universal Control Plane, which is a web-based user interface for managing Docker Enterprise clusters and applications.
UCP does not provide image scanning capabilities, but it integrates with Docker Trusted Registry (DTR), which does offer image scanning as part of its security features. References: https://docs.docker.com/ee/ucp/,
https://docs.docker.com/ee/dtr/user/manage-images/scan-images-for-vulnerabilities/

Explanation
Better caching when building Docker images is not an advantage of multi-stage builds. Multi-stage builds are a feature that allows you to use multiple FROM statements in a single Dockerfile. Each FROM statement begins a new stage of the build, with its own base image and instructions. You can selectively copy artifacts from one stage to another, leaving behind everything you don't want in the final image. The advantages of multi-stage builds are:
Reducing the size of the final image by removing unnecessary dependencies or intermediate files.
Improving the security of the final image by minimizing the attack surface and avoiding leaking secrets.
Simplifying the development workflow by using different tools or environments in different stages.
Better caching when building Docker images is not an advantage of multi-stage builds, as it depends on other factors, such as the order and content of the instructions in each stage, the availability and freshness of the base images and intermediate layers, and the use of build arguments or environment variables that may invalidate the cache. References:
https://docs.docker.com/develop/develop-images/multistage-build/,
https://docs.docker.com/develop/develop-images/dockerfile_best-practices/#leverage-build-cache