fix(.travis.yml): unset DEIS_REGISTRY before building image

Author: mboersma

.travis.yml

@@ -11,4 +11,4 @@ sudo: required
 install:
   - make bootstrap
 script:
-  - make test build docker-build
+  - DEIS_REGISTRY='' make test build docker-build

Makefile

@@ -36,12 +36,10 @@ test:
 	${DEV_ENV_CMD} go test ${TEST_PACKAGES}
 
 docker-build: build
-
 	# build the main image
 	docker build --rm -t ${IMAGE} rootfs
 	docker tag ${IMAGE} ${MUTABLE_IMAGE}
 
-
 deploy: build docker-build docker-push
 
 .PHONY: all bootstrap glideup build test docker-build deploy