cmd/{coordinator,pubsubhelper}: rename Makefile stage0 -> build0

Change-Id: I3ec52c384b662b2f8d5dd20eb94f440ed6a79c80
Reviewed-on: https://go-review.googlesource.com/40932
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
diff --git a/cmd/coordinator/Makefile b/cmd/coordinator/Makefile
index 60ddd4a..92accba 100644
--- a/cmd/coordinator/Makefile
+++ b/cmd/coordinator/Makefile
@@ -17,21 +17,21 @@
 	upload --verbose --osarch=linux-amd64 --file=go:golang.org/x/build/cmd/coordinator --public dev-go-builder-data/coordinator
 
 VERSION=v1
-DOCKER_IMAGE_STAGE0=stage0/coordinator:latest
-DOCKER_CTR_STAGE0=coordinator-stage0
+DOCKER_IMAGE_build0=build0/coordinator:latest
+DOCKER_CTR_build0=coordinator-build0
 
-stage0: *.go Dockerfile.0
-	docker build --force-rm -f Dockerfile.0 --tag=$(DOCKER_IMAGE_STAGE0) ../..
+build0: *.go Dockerfile.0
+	docker build --force-rm -f Dockerfile.0 --tag=$(DOCKER_IMAGE_build0) ../..
 
-coordinator: stage0
-	docker create --name $(DOCKER_CTR_STAGE0) $(DOCKER_IMAGE_STAGE0)
-	docker cp $(DOCKER_CTR_STAGE0):/go/bin/$@ $@
-	docker rm $(DOCKER_CTR_STAGE0)
+coordinator: build0
+	docker create --name $(DOCKER_CTR_build0) $(DOCKER_IMAGE_build0)
+	docker cp $(DOCKER_CTR_build0):/go/bin/$@ $@
+	docker rm $(DOCKER_CTR_build0)
 
 ca-certificates.crt:
-	docker create --name $(DOCKER_CTR_STAGE0) $(DOCKER_IMAGE_STAGE0)
-	docker cp $(DOCKER_CTR_STAGE0):/etc/ssl/certs/$@ $@
-	docker rm $(DOCKER_CTR_STAGE0)
+	docker create --name $(DOCKER_CTR_build0) $(DOCKER_IMAGE_build0)
+	docker cp $(DOCKER_CTR_build0):/etc/ssl/certs/$@ $@
+	docker rm $(DOCKER_CTR_build0)
 
 docker-prod: Dockerfile coordinator ca-certificates.crt
 	docker build --force-rm --tag=gcr.io/symbolic-datum-552/coordinator:$(VERSION) .
diff --git a/cmd/pubsubhelper/Makefile b/cmd/pubsubhelper/Makefile
index 1c67b5b..6a2af9c 100644
--- a/cmd/pubsubhelper/Makefile
+++ b/cmd/pubsubhelper/Makefile
@@ -3,21 +3,21 @@
 # license that can be found in the LICENSE file.
 
 VERSION=v2
-DOCKER_IMAGE_STAGE0=stage0/pubsubhelper:latest
-DOCKER_CTR_STAGE0=pubsubhelper-stage0
+DOCKER_IMAGE_build0=build0/pubsubhelper:latest
+DOCKER_CTR_build0=pubsubhelper-build0
 
-stage0: *.go Dockerfile.0
-	docker build --force-rm -f Dockerfile.0 --tag=$(DOCKER_IMAGE_STAGE0) ../..
+build0: *.go Dockerfile.0
+	docker build --force-rm -f Dockerfile.0 --tag=$(DOCKER_IMAGE_build0) ../..
 
-pubsubhelper: stage0
-	docker create --name $(DOCKER_CTR_STAGE0) $(DOCKER_IMAGE_STAGE0)
-	docker cp $(DOCKER_CTR_STAGE0):/go/bin/$@ $@
-	docker rm $(DOCKER_CTR_STAGE0)
+pubsubhelper: build0
+	docker create --name $(DOCKER_CTR_build0) $(DOCKER_IMAGE_build0)
+	docker cp $(DOCKER_CTR_build0):/go/bin/$@ $@
+	docker rm $(DOCKER_CTR_build0)
 
 ca-certificates.crt:
-	docker create --name $(DOCKER_CTR_STAGE0) $(DOCKER_IMAGE_STAGE0)
-	docker cp $(DOCKER_CTR_STAGE0):/etc/ssl/certs/$@ $@
-	docker rm $(DOCKER_CTR_STAGE0)
+	docker create --name $(DOCKER_CTR_build0) $(DOCKER_IMAGE_build0)
+	docker cp $(DOCKER_CTR_build0):/etc/ssl/certs/$@ $@
+	docker rm $(DOCKER_CTR_build0)
 
 docker-prod: Dockerfile pubsubhelper ca-certificates.crt
 	docker build --force-rm --tag=gcr.io/symbolic-datum-552/pubsubhelper:$(VERSION) .