Scott Frederick e294d26458 Set ephemeral builder container creation to a fixed date
This commit fixes the `Created` date and time of the ephemeral builder
container image at the Windows epoch plus one second
(1980-01-01T00:00:01Z). This date matches the created date of the builder
image and influences the created date of the resulting image. Using
a fixed date for images ensures that the digest is consistent for all
images with the same version.

Fixes gh-20126
2020-02-12 13:55:54 -06:00
..