add make test-integration

Docker-DCO-1.1-Signed-off-by: Victor Vieux <victor.vieux@docker.com> (github: vieux)

Makefile

@@ -1,4 +1,4 @@
-.PHONY: all binary build cross default docs docs-build docs-shell shell test
+.PHONY: all binary build cross default docs docs-build docs-shell shell test test-integration
 
 GIT_BRANCH := $(shell git rev-parse --abbrev-ref HEAD)
 DOCKER_IMAGE := docker:$(GIT_BRANCH)
@@ -25,6 +25,9 @@ docs-shell: docs-build
 test: build
 	$(DOCKER_RUN_DOCKER) hack/make.sh test test-integration
 
+test-integration: build
+	$(DOCKER_RUN_DOCKER) hack/make.sh test-integration
+
 shell: build
 	$(DOCKER_RUN_DOCKER) bash