build: image: use UTC for zip timestamp
authorSungbo Eo <mans0n@gorani.run>
Sat, 12 Feb 2022 08:01:31 +0000 (17:01 +0900)
committerSungbo Eo <mans0n@gorani.run>
Wed, 9 Mar 2022 06:38:23 +0000 (15:38 +0900)
commite42764cc5fa364e9fa553903c56191484738965e
treecd8de2a7916138a0adc0dc57427ad9508bb7f912
parented364cd4b03b289a7bb4b32c350c46eddeb6b6b9
build: image: use UTC for zip timestamp

Zip uses DOS timestamp for mtime which is stored in local time and hence
depends on the timezone of the build system. Force zip to use UTC timezone
to make image builds more reproducible.

Signed-off-by: Sungbo Eo <mans0n@gorani.run>
include/image-commands.mk