Merge pull request #37 from priyawadhwa/auth

Add auth for runing in Kubernetes cluster

files/config.json

@@ -0,0 +1,12 @@
+{
+	"auths": {
+	},
+	"credHelpers": {
+		"appengine.gcr.io": "gcr",
+		"asia.gcr.io": "gcr",
+		"eu.gcr.io": "gcr",
+		"gcr.io": "gcr",
+		"gcr.kubernetes.io": "gcr",
+		"us.gcr.io": "gcr"
+	}
+}

integration_tests/executor/Dockerfile

@@ -17,3 +17,7 @@
 FROM scratch
 ADD out/executor /kbuild/executor
 ADD files/ca-certificates.crt /etc/ssl/certs/
+ADD files/docker-credential-gcr /usr/local/bin/
+ADD files/config.json /root/.docker/
+ENV HOME /root
+ENV PATH /usr/local/bin