makefile: add buildargs to build commands

Author: sameersbn

Makefile

@@ -11,10 +11,14 @@ help:
 	@echo "   5. make purge        - stop and remove the container"
 
 build:
-	@docker build --tag=sameersbn/gitlab .
+	@docker build --tag=sameersbn/gitlab . \
+		--build-arg BUILD_DATE="$(shell date +"%Y-%m-%d %H:%M:%S%:z")" \
+		--build-arg VCS_REF=$(shell git rev-parse --short HEAD)
 
 release: build
-	@docker build --tag=sameersbn/gitlab:$(shell cat VERSION) .
+	@docker build --tag=sameersbn/gitlab:$(shell cat VERSION) . \
+		--build-arg BUILD_DATE="$(shell date +"%Y-%m-%d %H:%M:%S%:z")" \
+		--build-arg VCS_REF=$(git describe --tags --always)
 
 quickstart:
 	@echo "Starting postgresql container..."