v1.2.0

Added

• Add multiarch support. Thanks to @ndanyluk and @anagno !
• Allow usage of additional hostnames in self signed certificate #19. Thanks to @Bobonium

Changed

• Use debian buster-slim as baseimage
• Upgrade python script to python3
• Upgrade CFSSL version to 1.4.1

Fixed

• Fix shellcheck errors and warnings on all scripts