diff --git a/metropolis/pkg/localregistry/BUILD.bazel b/metropolis/pkg/localregistry/BUILD.bazel
index 636bc57..4281ac1 100644
--- a/metropolis/pkg/localregistry/BUILD.bazel
+++ b/metropolis/pkg/localregistry/BUILD.bazel
@@ -8,6 +8,8 @@
     deps = [
         "//metropolis/pkg/localregistry/spec",
         "@com_github_docker_distribution//:distribution",
+        "@com_github_docker_distribution//manifest/manifestlist",
+        "@com_github_docker_distribution//manifest/ocischema",
         "@com_github_docker_distribution//manifest/schema2",
         "@com_github_docker_distribution//reference",
         "@com_github_opencontainers_go_digest//:go-digest",
diff --git a/metropolis/pkg/localregistry/def.bzl b/metropolis/pkg/localregistry/def.bzl
index 061a63d..c5fc560 100644
--- a/metropolis/pkg/localregistry/def.bzl
+++ b/metropolis/pkg/localregistry/def.bzl
@@ -1,28 +1,19 @@
-load("@io_bazel_rules_docker//container:providers.bzl", "ImageInfo")
+#load("@io_bazel_rules_docker//container:providers.bzl", "ImageInfo")
 
 def _localregistry_manifest_impl(ctx):
     manifest_out = ctx.actions.declare_file(ctx.label.name+".prototxt")
-    
+
     images = []
     referenced = [manifest_out]
     for i in ctx.attr.images:
-        image_info = i[ImageInfo].container_parts
-        referenced.append(image_info['config'])
-        referenced.append(image_info['config_digest'])
+        image_file = i.files.to_list()[0]
         image = struct(
             name = i.label.package + "/" + i.label.name,
-            config = struct(
-                file_path = image_info['config'].short_path,
-                digest_path = image_info['config_digest'].short_path,
-            ),
-            layers = [],
+            path = image_file.short_path,
         )
-        for layer in zip(image_info['zipped_layer'], image_info['blobsum']):
-            referenced.append(layer[0])
-            referenced.append(layer[1])
-            image.layers.append(struct(file_path = layer[0].short_path, digest_path=layer[1].short_path))
+        referenced.append(image_file)
         images.append(image)
-    
+
     ctx.actions.write(manifest_out, proto.encode_text(struct(images = images)))
     return [DefaultInfo(runfiles = ctx.runfiles(files = referenced), files = depset([manifest_out]))]
 
@@ -36,9 +27,9 @@
         "images": attr.label_list(
             mandatory = True,
             doc = """
-                List of images (with ImageInfo provider) to be served from the local registry.
+                List of images to be served from the local registry.
             """,
-           providers = [ImageInfo],
+           providers = [],
         ),
     },
 )
diff --git a/metropolis/pkg/localregistry/localregistry.go b/metropolis/pkg/localregistry/localregistry.go
index e40fb1b..885259b 100644
--- a/metropolis/pkg/localregistry/localregistry.go
+++ b/metropolis/pkg/localregistry/localregistry.go
@@ -10,10 +10,13 @@
 	"log"
 	"net/http"
 	"os"
+	"path/filepath"
 	"regexp"
 	"strconv"
 
 	"github.com/docker/distribution"
+	"github.com/docker/distribution/manifest/manifestlist"
+	"github.com/docker/distribution/manifest/ocischema"
 	"github.com/docker/distribution/manifest/schema2"
 	"github.com/docker/distribution/reference"
 	"github.com/opencontainers/go-digest"
@@ -33,55 +36,76 @@
 	contentLength int64
 }
 
-func blobFromBazel(s *Server, bd *spec.BlobDescriptor, mediaType string) (distribution.Descriptor, error) {
-	digestRaw, err := os.ReadFile(bd.DigestPath)
+func manifestDescriptorFromBazel(image *spec.Image) (manifestlist.ManifestDescriptor, error) {
+	indexPath := filepath.Join(image.Path, "index.json")
+
+	manifestListRaw, err := os.ReadFile(indexPath)
 	if err != nil {
-		return distribution.Descriptor{}, fmt.Errorf("while opening digest file: %w", err)
+		return manifestlist.ManifestDescriptor{}, fmt.Errorf("while opening manifest list file: %w", err)
 	}
-	stat, err := os.Stat(bd.FilePath)
-	if err != nil {
-		return distribution.Descriptor{}, fmt.Errorf("while stat'ing blob file: %w", err)
+
+	var imageManifestList manifestlist.ManifestList
+	if err := json.Unmarshal(manifestListRaw, &imageManifestList); err != nil {
+		return manifestlist.ManifestDescriptor{}, fmt.Errorf("while unmarshaling manifest list for %q: %w", image.Name, err)
 	}
-	digest := digest.Digest("sha256:" + string(digestRaw))
-	s.blobs[digest] = blobMeta{filePath: bd.FilePath, mediaType: mediaType, contentLength: stat.Size()}
-	return distribution.Descriptor{
-		MediaType: mediaType,
-		Size:      stat.Size(),
-		Digest:    digest,
-	}, nil
+
+	if len(imageManifestList.Manifests) != 1 {
+		return manifestlist.ManifestDescriptor{}, fmt.Errorf("unexpected manifest list length > 1")
+	}
+
+	return imageManifestList.Manifests[0], nil
 }
 
-func FromBazelManifest(m []byte) (*Server, error) {
-	var manifest spec.Manifest
-	if err := prototext.Unmarshal(m, &manifest); err != nil {
+func manifestFromBazel(s *Server, image *spec.Image, md manifestlist.ManifestDescriptor) (ocischema.Manifest, error) {
+	manifestPath := filepath.Join(image.Path, "blobs", md.Digest.Algorithm().String(), md.Digest.Hex())
+	manifestRaw, err := os.ReadFile(manifestPath)
+	if err != nil {
+		return ocischema.Manifest{}, fmt.Errorf("while opening manifest file: %w", err)
+	}
+
+	var imageManifest ocischema.Manifest
+	if err := json.Unmarshal(manifestRaw, &imageManifest); err != nil {
+		return ocischema.Manifest{}, fmt.Errorf("while unmarshaling manifest for %q: %w", image.Name, err)
+	}
+
+	// For Digest lookups
+	s.manifests[image.Name] = manifestRaw
+	s.manifests[md.Digest.String()] = manifestRaw
+
+	return imageManifest, nil
+}
+
+func addBazelBlobFromDescriptor(s *Server, image *spec.Image, dd distribution.Descriptor) {
+	path := filepath.Join(image.Path, "blobs", dd.Digest.Algorithm().String(), dd.Digest.Hex())
+	s.blobs[dd.Digest] = blobMeta{filePath: path, mediaType: dd.MediaType, contentLength: dd.Size}
+}
+
+func FromBazelManifest(mb []byte) (*Server, error) {
+	var bazelManifest spec.Manifest
+	if err := prototext.Unmarshal(mb, &bazelManifest); err != nil {
 		log.Fatalf("failed to parse manifest: %v", err)
 	}
 	s := Server{
 		manifests: make(map[string][]byte),
 		blobs:     make(map[digest.Digest]blobMeta),
 	}
-	for _, i := range manifest.Images {
-		imageManifest := schema2.Manifest{
-			Versioned: schema2.SchemaVersion,
-		}
-		var err error
-		imageManifest.Config, err = blobFromBazel(&s, i.Config, schema2.MediaTypeImageConfig)
+	for _, i := range bazelManifest.Images {
+		md, err := manifestDescriptorFromBazel(i)
 		if err != nil {
-			return nil, fmt.Errorf("while creating blob spec for %q: %w", i.Name, err)
+			return nil, err
 		}
-		for _, l := range i.Layers {
-			ml, err := blobFromBazel(&s, l, schema2.MediaTypeLayer)
-			if err != nil {
-				return nil, fmt.Errorf("while creating blob spec for %q: %w", i.Name, err)
-			}
-			imageManifest.Layers = append(imageManifest.Layers, ml)
-		}
-		s.manifests[i.Name], err = json.Marshal(imageManifest)
+
+		addBazelBlobFromDescriptor(&s, i, md.Descriptor)
+
+		m, err := manifestFromBazel(&s, i, md)
 		if err != nil {
-			return nil, fmt.Errorf("while marshaling image %q manifest: %w", i.Name, err)
+			return nil, err
 		}
-		// For Digest lookups
-		s.manifests[string(digest.Canonical.FromBytes(s.manifests[i.Name]))] = s.manifests[i.Name]
+
+		addBazelBlobFromDescriptor(&s, i, m.Config)
+		for _, l := range m.Layers {
+			addBazelBlobFromDescriptor(&s, i, l)
+		}
 	}
 	return &s, nil
 }
diff --git a/metropolis/pkg/localregistry/spec/manifest.proto b/metropolis/pkg/localregistry/spec/manifest.proto
index b4daeab..b28c8b7 100644
--- a/metropolis/pkg/localregistry/spec/manifest.proto
+++ b/metropolis/pkg/localregistry/spec/manifest.proto
@@ -4,23 +4,12 @@
 
 option go_package = "source.monogon.dev/metropolis/pkg/localregistry/spec";
 
-// BlobDescriptor is metadata for a single registry blob. Analogous to a
-// distribution.Descriptor in Go.
-message BlobDescriptor {
-    // Path to the file in the build directory.
-    string file_path = 1;
-    // Path to a file containing the SHA256 digest of the blob.
-    string digest_path = 2;
-}
-
 // Single image metadata
 message Image {
     // Name of the image (no domain or tag, just slash-separated path)
     string name = 1;
-    // Config blob
-    BlobDescriptor config = 2;
-    // Layer blobs in order
-    repeated BlobDescriptor layers = 3;
+    // Path to the image
+    string path = 2;
 }
 
 // Main message