Get tag from Var

Makefile

@@ -1,12 +1,13 @@
+DOCKER_TAG = docker-glpi
 DOCKER_REVISION ?= testing-$(USER)
 
 .PHONY: build-image
 build-image:
-	docker build -t glpi:${DOCKER_REVISION} .
+	docker build -t ${DOCKER_TAG}:${DOCKER_REVISION} .
 
 .PHONY: run-image
 run-image:
-	docker run -it --rm -p 8080:80 glpi:${DOCKER_REVISION}
+	docker run -it --rm -p 8080:80 ${DOCKER_TAG}:${DOCKER_REVISION}
 
 .PHONY: start-dev
 start-dev: build-image run-image