why the difference lower / uppercase letter in
docker system prune WARNING! This will remove: - all stopped containers - all networks not used by at least one container - all dangling images - all dangling build cache Are you sure you want to continue? [y/N]
User input is case insensitive here so there is no point in showing “No” in uppercase. Besides, the destructive option is “Yes” which, if anything, would have made more sense enforcing more strict input for confirmation.