fix: cyclical imports

pkg/mirror/README.md

@@ -0,0 +1,2 @@
+## mirror
+This package contains components to mirror TUF metadata and targets to OCI.

pkg/mirror/authn_test.go

@@ -1,33 +0,0 @@
-//go:build e2e
-
-package mirror_test
-
-import (
-	"path/filepath"
-	"testing"
-
-	"github.com/docker/attest/pkg/oci"
-	"github.com/stretchr/testify/require"
-)
-
-func TestRegistryAuth(t *testing.T) {
-	UnsignedTestImage := filepath.Join("..", "..", "test", "testdata", "unsigned-test-image")
-
-	attIdx, err := oci.IndexFromPath(UnsignedTestImage)
-	require.NoError(t, err)
-	// test cases for ecr, gcr and dockerhub
-	testCases := []struct {
-		Image string
-	}{
-		{Image: "175142243308.dkr.ecr.us-east-1.amazonaws.com/e2e-test-image:latest"},
-		{Image: "docker/image-signer-verifier-test:latest"},
-	}
-	for _, tc := range testCases {
-		t.Run(tc.Image, func(t *testing.T) {
-			err := oci.PushIndexToRegistry(attIdx.Index, tc.Image)
-			require.NoError(t, err)
-			_, err = oci.IndexFromRemote(tc.Image)
-			require.NoError(t, err)
-		})
-	}
-}