Merge pull request #175 from dhiltgen/platform_master

Merged with https://github.com/seemethere/unir

Author: docker-unir[bot]

Makefile

@@ -7,7 +7,11 @@ ARCH=$(shell uname -m)
 STATIC_VERSION=$(shell static/gen-static-ver $(ENGINE_DIR) $(VERSION))
 GO_VERSION:=1.10.4
 DEFAULT_PRODUCT_LICENSE:=Community Engine
+PLATFORM=Docker Engine - Community
+BUILDTIME=$(shell date -u -d "@$${SOURCE_DATE_EPOCH:-$$(date +%s)}" --rfc-3339 ns 2> /dev/null | sed -e 's/ /T/')
 export DEFAULT_PRODUCT_LICENSE
+export PLATFORM
+export BUILDTIME
 
 # Taken from: https://www.cmcrossroads.com/article/printing-value-makefile-variable
 print-%  : ; @echo $($*)