cli/command/image: pushTrustedReference: internalize constructing indexInfo

All information needed can be deducted from the image reference, which
is used to create a indexInfo, repoInfo, and to resolve auth-config.

In some situations this may result in resolving the auth-config twice
after it already was resolved to an encoded auth-config.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit 9a6313e)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

Author: thaJeztah

cli/command/image/push.go

@@ -17,11 +17,9 @@ import (
 	"github.com/docker/cli/cli/streams"
 	"github.com/docker/cli/cli/trust"
 	"github.com/docker/cli/internal/jsonstream"
-	"github.com/docker/cli/internal/registry"
 	"github.com/docker/cli/internal/tui"
 	"github.com/docker/docker/api/types/auxprogress"
 	"github.com/docker/docker/api/types/image"
-	registrytypes "github.com/docker/docker/api/types/registry"
 	"github.com/morikuni/aec"
 	ocispec "github.com/opencontainers/image-spec/specs-go/v1"
 	"github.com/pkg/errors"
@@ -114,12 +112,8 @@ To push the complete multi-platform image, remove the --platform flag.
 		}
 	}
 
-	// Resolve the Repository name from fqn to RepositoryInfo
-	indexInfo := registry.NewIndexInfo(ref)
-
 	// Resolve the Auth config relevant for this server
-	authConfig := command.ResolveAuthConfig(dockerCli.ConfigFile(), indexInfo)
-	encodedAuth, err := registrytypes.EncodeAuthConfig(authConfig)
+	encodedAuth, err := command.RetrieveAuthTokenFromImage(dockerCli.ConfigFile(), ref.String())
 	if err != nil {
 		return err
 	}
@@ -142,7 +136,7 @@ To push the complete multi-platform image, remove the --platform flag.
 	}()
 
 	if !opts.untrusted {
-		return pushTrustedReference(ctx, dockerCli, indexInfo, ref, authConfig, responseBody)
+		return pushTrustedReference(ctx, dockerCli, ref, responseBody)
 	}
 
 	if opts.quiet {

cli/command/image/trust.go

@@ -12,6 +12,7 @@ import (
 	"github.com/docker/cli/cli/streams"
 	"github.com/docker/cli/cli/trust"
 	"github.com/docker/cli/internal/jsonstream"
+	"github.com/docker/cli/internal/registry"
 	"github.com/docker/docker/api/types/image"
 	registrytypes "github.com/docker/docker/api/types/registry"
 	"github.com/opencontainers/go-digest"
@@ -42,12 +43,18 @@ func newNotaryClient(cli command.Streams, imgRefAndAuth trust.ImageRefAndAuth) (
 }
 
 // pushTrustedReference pushes a canonical reference to the trust server.
-func pushTrustedReference(ctx context.Context, ioStreams command.Streams, indexInfo *registrytypes.IndexInfo, ref reference.Named, authConfig registrytypes.AuthConfig, in io.Reader) error {
+func pushTrustedReference(ctx context.Context, dockerCLI command.Cli, ref reference.Named, responseBody io.Reader) error {
+	// Resolve the Repository name from fqn to RepositoryInfo, and create an
+	// IndexInfo. Docker Content Trust uses the IndexInfo.Official field to
+	// select the right domain for Docker Hub's Notary server;
+	// https://github.com/docker/cli/blob/v28.4.0/cli/trust/trust.go#L65-L79
+	indexInfo := registry.NewIndexInfo(ref)
 	repoInfo := &trust.RepositoryInfo{
 		Name:  reference.TrimNamed(ref),
 		Index: indexInfo,
 	}
-	return trust.PushTrustedReference(ctx, ioStreams, repoInfo, ref, authConfig, in, command.UserAgent())
+	authConfig := command.ResolveAuthConfig(dockerCLI.ConfigFile(), indexInfo)
+	return trust.PushTrustedReference(ctx, dockerCLI, repoInfo, ref, authConfig, responseBody, command.UserAgent())
 }
 
 // trustedPull handles content trust pulling of an image

cli/trust/trust.go

@@ -342,7 +342,10 @@ func GetImageReferencesAndAuth(ctx context.Context,
 		return ImageRefAndAuth{}, err
 	}
 
-	// Resolve the Repository name from fqn to RepositoryInfo
+	// Resolve the Repository name from fqn to RepositoryInfo, and create an
+	// IndexInfo. Docker Content Trust uses the IndexInfo.Official field to
+	// select the right domain for Docker Hub's Notary server;
+	// https://github.com/docker/cli/blob/v28.4.0/cli/trust/trust.go#L65-L79
 	indexInfo := registry.NewIndexInfo(ref)
 	authConfig := authResolver(ctx, indexInfo)
 	return ImageRefAndAuth{