One additional comment that I think adds to this discussion.  To the extent you believe that Docker containers represent an industry-wide strategy, and certainly Microsoft seems to emphasize Docker containers for their vNext release . . . I would argue that is another reason for exploring these SQL Server containers.   As SQL Server professionals we need to be aware of larger trends, and consider that there is an entire industry innovating on containers, and it may be important in the future to have SQL Server strategies that align with a container oriented world.