I see you got a recent copy. The original p12 follows follows:

  A small number of vendors disagree with this direction. Some have expressed their concern that, as
  Docker expands its scope, there may be less room for them to create differentiated, value-added
  offerings. In some cases, these vendors want to create orchestration solution that are tailored for their
  particular infrastructure or offerings, and do not welcome the notion of portability. In some cases, of
  course, there are technical or philosophical differences. We hope to address some of the technical
  arguments posed by the Rocket project in a subsequent post.