What does the "Dashboard tile: Docker" specifically compare?

The correct choice compares the number of containers and images against last week, specifically focusing on Docker metrics. This is vital for understanding the changes in your containerized environment over time. By examining this comparison, users can gain insights into trends in container utilization, identify spikes or drops in the usage of images and containers, and effectively monitor resource allocation and performance in a Dockerized setup.

This comparison is particularly useful for teams managing microservices, as it helps in assessing the scalability and deployment practices of applications running in containers. Tracking the number of containers and images can also highlight operational efficiencies or potential issues in the deployment process.

In contrast, the other options focus on different aspects of system monitoring—virtual machines, network health, and service request metrics—none of which specifically address the metrics provided by Docker regarding containers and images. Thus, the choice that focuses on the number of containers and images directly aligns with the purpose of the Docker dashboard tile, enabling better management and optimization of containerized applications.