Delivery data creation device, delivery data creation method, and delivery data creation program

摘要

To reduce transmission capacity during data distribution about an updated container image.SOLUTION: A distribution data creation server 3 includes: an updated part retrieval part 332 for retrieving an update layer whose contents are updated in comparison with an unupdated container image about an updated container image among container images composed of a plurality of layers, and retrieving a changed part in the retrieved update layer; and a binary patch file creation part 333 for calculating a binary difference from the unupdated container image about the changed part in the update layer retrieved by the updated part retrieval part 332 and creating a binary patch file.SELECTED DRAWING: Figure 2