Add a test for unauthenticated dockerhub pulls

examples/tests/unauthenticated/.dockerignore

@@ -0,0 +1 @@
+*

examples/tests/unauthenticated/Pulumi.yaml

@@ -0,0 +1,18 @@
+name: dockerhub-unauthenticated
+description: Pull an image from Dockerhub without credentials
+runtime: yaml
+plugins:
+  providers:
+    - name: docker-build
+      path: ../../../bin
+resources:
+  my-image:
+    type: docker-build:Image
+    properties:
+      tags:
+        - alpine-local
+      load: true
+      context:
+        location: .
+      dockerfile:
+        inline: FROM alpine

examples/yaml_test.go

@@ -58,3 +58,14 @@ func TestDockerHub(t *testing.T) {
 
 	integration.ProgramTest(t, &test)
 }
+
+func TestDockerHubUnauthenticated(t *testing.T) {
+	cwd, err := os.Getwd()
+	require.NoError(t, err)
+
+	test := integration.ProgramTestOptions{
+		Dir: path.Join(cwd, "tests/unauthenticated"),
+	}
+
+	integration.ProgramTest(t, &test)
+}