imagetools: fix pushing same image with multiple names

containerd pusher can’t handle this case atm so we
need to make sure we always create a new resolver
for each name.

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>

util/imagetools/create.go

@@ -150,7 +150,7 @@ func (r *Resolver) Combine(ctx context.Context, in string, descs []ocispec.Descr
 func (r *Resolver) Push(ctx context.Context, ref reference.Named, desc ocispec.Descriptor, dt []byte) error {
 	ref = reference.TagNameOnly(ref)
 
-	p, err := r.r.Pusher(ctx, ref.String())
+	p, err := r.resolver().Pusher(ctx, ref.String())
 	if err != nil {
 		return err
 	}

util/imagetools/inspect.go

@@ -24,26 +24,29 @@ type Opt struct {
 }
 
 type Resolver struct {
-	r remotes.Resolver
+	auth docker.Authorizer
 }
 
 func New(opt Opt) *Resolver {
-	resolver := docker.NewResolver(docker.ResolverOptions{
-		Client:      http.DefaultClient,
-		Credentials: toCredentialsFunc(opt.Auth),
-	})
 	return &Resolver{
-		r: resolver,
+		auth: docker.NewDockerAuthorizer(docker.WithAuthCreds(toCredentialsFunc(opt.Auth)), docker.WithAuthClient(http.DefaultClient)),
 	}
 }
 
+func (r *Resolver) resolver() remotes.Resolver {
+	return docker.NewResolver(docker.ResolverOptions{
+		Authorizer: r.auth,
+		Client:     http.DefaultClient,
+	})
+}
+
 func (r *Resolver) Resolve(ctx context.Context, in string) (string, ocispec.Descriptor, error) {
 	ref, err := parseRef(in)
 	if err != nil {
 		return "", ocispec.Descriptor{}, err
 	}
 
-	in, desc, err := r.r.Resolve(ctx, ref.String())
+	in, desc, err := r.resolver().Resolve(ctx, ref.String())
 	if err != nil {
 		return "", ocispec.Descriptor{}, err
 	}
@@ -65,7 +68,7 @@ func (r *Resolver) Get(ctx context.Context, in string) ([]byte, ocispec.Descript
 }
 
 func (r *Resolver) GetDescriptor(ctx context.Context, in string, desc ocispec.Descriptor) ([]byte, error) {
-	fetcher, err := r.r.Fetcher(ctx, in)
+	fetcher, err := r.resolver().Fetcher(ctx, in)
 	if err != nil {
 		return nil, err
 	}