diff --git a/Makefile b/Makefile
index 3e24665..09c6943 100644
--- a/Makefile
+++ b/Makefile
@@ -22,7 +22,7 @@ install_deps: ## Install dependencies.
 
 example:
 	@echo "Push first image..."
-	$(PYTHON) -m gloci.cli image push --container localhost:8081/$(EXAMPLECONTAINERNAME):latest  --info_yaml example-data/info.yaml
+	$(PYTHON) -m gloci.cli image push --container localhost:8081/$(EXAMPLECONTAINERNAME):latest --architecture arm64 --cname yolo-example_dev --info_yaml example-data/info.yaml
 #	@echo "Attach some file to image..."
 #	$(PYTHON) -m gloci.cli image attach --container localhost:8081/$(EXAMPLECONTAINERNAME):latest  --file_path config.ini --media_type application/vnd.oci.image.layer.v1.tar
 	@echo "Inspect final oci image"
diff --git a/src/gloci/commands/image.py b/src/gloci/commands/image.py
index e40ba41..ba20db6 100644
--- a/src/gloci/commands/image.py
+++ b/src/gloci/commands/image.py
@@ -17,21 +17,20 @@ def image():
 
 @image.command()
 @click.option('--container', required=True, type=click.Path(), help='Container Name')
+@click.option('--architecture', required=True, type=click.Path(), help='Target Image CPU Architecture')
+@click.option('--cname', required=True, type=click.Path(), help='Canonical Name of Image')
 @click.option('--info_yaml', required=True, type=click.Path(),
               help='info.yaml file of the Garden Linux flavor. The info.yaml specifies the data (layers) to expect to '
                    'be attached later.')
-def push(container, info_yaml):
+def push(container, architecture, cname, info_yaml):
     container = oras.container.Container(container)
     registry = GlociRegistry(container.registry)
 
-    # TODO: Get CPU Architecture
-
-    # TODO: Get target GL Flavor
-
-    # TODO: Create image manifest
+    # TODO: cname can be computed from info_yaml content,
+    #  but for consistency we let the caller who knows the cname already provide the cname
 
     # Create and Push image manifest
-    registry.push_image_manifest(container, info_yaml)
+    registry.push_image_manifest(container, architecture, cname, info_yaml)
 
 
 @image.command()
diff --git a/src/gloci/oras/registry.py b/src/gloci/oras/registry.py
index 4e802cd..b6074f9 100644
--- a/src/gloci/oras/registry.py
+++ b/src/gloci/oras/registry.py
@@ -65,8 +65,10 @@ def get_uri_for_digest(uri, digest):
     return f"{base_uri}@{digest}"
 
 
-def NewPlatform() -> dict:
-    return copy.deepcopy(EmptyPlatform)
+def NewPlatform(architecture) -> dict:
+    platform = copy.deepcopy(EmptyPlatform)
+    platform['architecture'] = architecture
+    return platform
 
 
 def NewManifestMetadata() -> dict:
@@ -188,13 +190,12 @@ def _get_index(self, container):
 
         return image_index
 
-
     @ensure_container
-    def push_image_manifest(self, container, info_yaml):
+    def push_image_manifest(self, container, architecture, cname, info_yaml):
         """
         creates and pushes an image manifest
         """
-        logger.debug("start push image manifest") 
+        logger.debug("start push image manifest")
         assert info_yaml is not None, "error: info_yaml is None"
         with open(info_yaml, 'r') as f:
             info_data = yaml.safe_load(f)
@@ -295,8 +296,7 @@ def push_image_manifest(self, container, info_yaml):
         manifest_index_metadata['digest'] = f"sha256:{checksum_sha256}"
         manifest_index_metadata['size'] = 0
         manifest_index_metadata['annotations'] = {}
-        # TODO: fill in Platform details based on input or defaults
-        manifest_index_metadata['platform'] = NewPlatform()
+        manifest_index_metadata['platform'] = NewPlatform(architecture)
         manifest_index_metadata['artifactType'] = ""
 
         image_index['manifests'].append(manifest_index_metadata)