debug missing os

task_test.go

@@ -15,6 +15,7 @@ import (
 	"github.com/google/go-containerregistry/pkg/registry"
 	v1 "github.com/google/go-containerregistry/pkg/v1"
 	"github.com/google/go-containerregistry/pkg/v1/layout"
+	"github.com/google/go-containerregistry/pkg/v1/mutate"
 	"github.com/google/go-containerregistry/pkg/v1/random"
 	"github.com/google/go-containerregistry/pkg/v1/remote"
 	"github.com/google/go-containerregistry/pkg/v1/tarball"
@@ -330,12 +331,18 @@ func (s *TaskSuite) TestImageArgs() {
 
 	firstImage, err := random.Image(1024, 2)
 	s.NoError(err)
+
+	firstImage = s.withPlatform(firstImage, "linux", "amd64")
+
 	firstPath := filepath.Join(imagesDir, "first.tar")
 	err = tarball.WriteToFile(firstPath, nil, firstImage)
 	s.NoError(err)
 
 	secondImage, err := random.Image(1024, 2)
 	s.NoError(err)
+
+	secondImage = s.withPlatform(secondImage, "linux", "amd64")
+
 	secondPath := filepath.Join(imagesDir, "second.tar")
 	err = tarball.WriteToFile(secondPath, nil, secondImage)
 	s.NoError(err)
@@ -651,6 +658,20 @@ func (s *TaskSuite) imageMetadata(output string) (task.ImageMetadata, error) {
 	return meta, nil
 }
 
+func (s *TaskSuite) withPlatform(image v1.Image, os string, arch string) v1.Image {
+	cf, err := image.ConfigFile()
+	s.NoError(err)
+
+	cf = cf.DeepCopy()
+	cf.OS = "linux"
+	cf.Architecture = "amd64"
+
+	image, err = mutate.ConfigFile(image, cf)
+	s.NoError(err)
+
+	return image
+}
+
 func TestSuite(t *testing.T) {
 	suite.Run(t, &TaskSuite{
 		Assertions: require.New(t),