diff --git a/cloudbuild_tag.yaml b/cloudbuild_tag.yaml
index ddebb435..b9754bab 100644
--- a/cloudbuild_tag.yaml
+++ b/cloudbuild_tag.yaml
@@ -11,7 +11,8 @@ steps:
 # Set TAG_NAME as version.
 - name: 'ubuntu'
   args: ['sed', '-i', 's/HEAD/$TAG_NAME/g', 'version.go']
-# Create binaries.
+# Create binaries for each pair of OS/Arch.
+# Create an archive with the latest binaries; that enables a single download url.
 - name: 'gcr.io/cloud-builders/go:wheezy'
   entrypoint: 'bash'
   args:
@@ -19,9 +20,10 @@ steps:
   - |
     for GOOS in darwin linux windows; do
         for GOARCH in 386 amd64; do
+            # Build binary with the new tag and with 'latest'
             GOOS=$$GOOS GOARCH=$$GOARCH /builder/bin/go.bash build -o container-builder-local_$${GOOS}_$${GOARCH}-$TAG_NAME github.com/GoogleCloudPlatform/container-builder-local
         done
     done
-# Copy binaries to GCS.
+    tar -czvf container-builder-local_latest.tar.gz container-builder-local_*
 - name: 'gcr.io/cloud-builders/gsutil'
   args: ['-m', 'cp', 'container-builder-local_*', 'gs://container-builder-local/']
diff --git a/integration_tests/cloudbuild_dockerfile.yaml b/integration_tests/cloudbuild_dockerfile.yaml
index b108fe22..22b90250 100644
--- a/integration_tests/cloudbuild_dockerfile.yaml
+++ b/integration_tests/cloudbuild_dockerfile.yaml
@@ -1,5 +1,5 @@
 steps:
 - name: 'gcr.io/cloud-builders/docker'
-  args: ['build', '-t', 'gcr.io/argo-local-builder/test', '.']
+  args: ['build', '-t', 'gcr.io/$PROJECT_ID/test', '.']
 
-images: ['gcr.io/argo-local-builder/test']
+images: ['gcr.io/$PROJECT_ID/test']
diff --git a/integration_tests/cloudbuild_gcr.yaml b/integration_tests/cloudbuild_gcr.yaml
index 71af0acc..cbb2eaa5 100644
--- a/integration_tests/cloudbuild_gcr.yaml
+++ b/integration_tests/cloudbuild_gcr.yaml
@@ -2,14 +2,14 @@
 
 steps:
 - name: 'gcr.io/cloud-builders/docker'
-  args: ['pull', 'gcr.io/argo-local-builder/test']
+  args: ['pull', 'gcr.io/$PROJECT_ID/test']
 - name: 'gcr.io/cloud-builders/docker'
   args:
   - 'build'
   - '--cache-from'
-  - 'gcr.io/argo-local-builder/test'
+  - 'gcr.io/$PROJECT_ID/test'
   - '-t'
-  - 'gcr.io/argo-local-builder/test'
+  - 'gcr.io/$PROJECT_ID/test'
   - '.'
 
-images: ['gcr.io/argo-local-builder/test']
+images: ['gcr.io/$PROJECT_ID/test']
diff --git a/localbuilder_main.go b/localbuilder_main.go
index ee9ddbd8..17ca5cfe 100644
--- a/localbuilder_main.go
+++ b/localbuilder_main.go
@@ -49,7 +49,7 @@ const (
 )
 
 var (
-	configFile    = flag.String("config", "cloudconfig.yaml", "cloud build config file path")
+	configFile    = flag.String("config", "cloudbuild.yaml", "cloud build config file path")
 	substitutions = flag.String("substitutions", "", `substitutions key=value pairs separated by comma; for example _FOO=bar,_BAZ=argo`)
 	dryRun        = flag.Bool("dryrun", true, "If true, nothing will be run")
 	push          = flag.Bool("push", false, "If true, the images will be pushed")
@@ -98,6 +98,11 @@ func run(source string) error {
 		DryRun: *dryRun,
 	}
 
+	// Channel to tell goroutines to stop.
+	// Do not defer the close() because we want this stop to happen before other
+	// defer functions.
+	stopchan := make(chan struct{})
+
 	// Clean leftovers from a previous build.
 	if err := common.Clean(r); err != nil {
 		return fmt.Errorf("Error cleaning: %v", err)
@@ -191,7 +196,7 @@ func run(source string) error {
 			// Feed the project info to the metadata server.
 			metadataUpdater.SetProjectInfo(projectInfo)
 
-			go supplyTokenToMetadata(metadataUpdater, r)
+			go supplyTokenToMetadata(metadataUpdater, r, stopchan)
 		}
 
 		// Set initial Docker credentials.
@@ -206,8 +211,8 @@ func run(source string) error {
 		// Write initial docker credentials for GCR. This writes the initial
 		// ~/.docker/config.json which is made available to build steps.
 		
-		go func() {
-			for ; ; time.Sleep(tokenRefreshDur) {
+		go func(stopchan <-chan struct{}) {
+			for {
 				tok, err := gcloud.AccessToken(r)
 				if err != nil {
 					log.Printf("Error getting access token to update docker credentials: %v", err)
@@ -216,13 +221,21 @@ func run(source string) error {
 				if err := b.UpdateDockerAccessToken(tok); err != nil {
 					log.Printf("Error updating docker credentials: %v", err)
 				}
+				select {
+				case <-time.After(tokenRefreshDur):
+					continue
+				case <-stopchan:
+					return
+				}
 			}
-		}()
+		}(stopchan)
 	}
 
 	b.Start()
 	<-b.Done
 
+	close(stopchan)
+
 	if b.Summary().Status == build.StatusError {
 		return fmt.Errorf("Build finished with ERROR status")
 	}
@@ -234,8 +247,8 @@ func run(source string) error {
 }
 
 // supplyTokenToMetadata gets gcloud token and supply it to the metadata server.
-func supplyTokenToMetadata(metadataUpdater metadata.RealUpdater, r runner.Runner) {
-	for ; ; time.Sleep(tokenRefreshDur) {
+func supplyTokenToMetadata(metadataUpdater metadata.RealUpdater, r runner.Runner, stopchan <-chan struct{}) {
+	for {
 		accessToken, err := gcloud.AccessToken(r)
 		if err != nil {
 			log.Printf("Error getting gcloud token: %v", err)
@@ -251,6 +264,12 @@ func supplyTokenToMetadata(metadataUpdater metadata.RealUpdater, r runner.Runner
 			log.Printf("Error updating token in metadata server: %v", err)
 			continue
 		}
+		select {
+		case <-time.After(tokenRefreshDur):
+			continue
+		case <-stopchan:
+			return
+		}
 	}
 }
 
diff --git a/metadata/metadata.go b/metadata/metadata.go
index d507a741..7dbbe638 100644
--- a/metadata/metadata.go
+++ b/metadata/metadata.go
@@ -204,7 +204,7 @@ func StartCloudServer(r runner.Runner, metadataImage string) error {
 // builds.
 func CreateCloudbuildNetwork(r runner.Runner, subnet string) error {
 	cmd := []string{"docker", "network", "create", "cloudbuild", "--subnet=" + subnet}
-	return r.Run(cmd, nil, os.Stdout, os.Stderr, "")
+	return r.Run(cmd, nil, nil, os.Stderr, "")
 }
 
 func startServer(r runner.Runner, metadataImage string, iptables bool, ip, subnet string) error {
@@ -220,14 +220,12 @@ func startServer(r runner.Runner, metadataImage string, iptables bool, ip, subne
 	} else {
 		cmd = []string{"docker", "run", "-d", "--name=metadata", metadataImage}
 	}
-	log.Println(cmd)
 	if err := r.Run(cmd, nil, nil, os.Stderr, ""); err != nil {
 		return err
 	}
 
 	// Redirect requests to metadata.google.internal and the fixed metadata IP to the metadata container.
 	cmd = []string{"docker", "network", "connect", "--alias=metadata", "--alias=metadata.google.internal", "--ip=" + ip, "cloudbuild", "metadata"}
-	log.Println(cmd)
 	if err := r.Run(cmd, nil, nil, os.Stderr, ""); err != nil {
 		return fmt.Errorf("Error connecting metadata to network: %v", err)
 	}
@@ -243,7 +241,6 @@ func startServer(r runner.Runner, metadataImage string, iptables bool, ip, subne
 			"-j", "DNAT", // This rule does destination NATting,
 			"--to-destination", metadataHostedIP, // to our spoofed metadata container.
 		}
-		log.Println(cmd)
 		if err := r.Run(cmd, nil, os.Stdout, os.Stderr, ""); err != nil {
 			return fmt.Errorf("Error updating iptables: %v", err)
 		}