With the Fleet Server enabled in the agent's Docker container, we need to find a way to signal that the container is healthy. Before 7.13.0-SNAPSHOT we used the following healthcheck: https://github.com/elastic/elastic-package/blob/master/internal/install/static_snapshot_yml.go#L85

Do you have any recommendation how to signal that the container is healthy - it has a default policy assigned? Do you think you can add the healthcheck definition to the official Docker image?