diff --git a/2023/05/OSS_NA-Container_Registries_not_just_containers/Makefile b/2023/05/OSS_NA-Container_Registries_not_just_containers/Makefile
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+++ b/2023/05/OSS_NA-Container_Registries_not_just_containers/Makefile
@@ -0,0 +1,6 @@
+
+img/%.png: img/%.dot
+	dot -Tpng $^ > $@
+
+registry:
+	PORT=1234 crane registry serve
diff --git a/2023/05/OSS_NA-Container_Registries_not_just_containers/OSS-NA-ContainerCon_2023 - Container Registries for non-containers.odp b/2023/05/OSS_NA-Container_Registries_not_just_containers/OSS-NA-ContainerCon_2023 - Container Registries for non-containers.odp
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diff --git a/2023/05/OSS_NA-Container_Registries_not_just_containers/OSS-NA-ContainerCon_2023 - Container Registries for non-containers.pdf b/2023/05/OSS_NA-Container_Registries_not_just_containers/OSS-NA-ContainerCon_2023 - Container Registries for non-containers.pdf
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diff --git a/2023/05/OSS_NA-Container_Registries_not_just_containers/README.md b/2023/05/OSS_NA-Container_Registries_not_just_containers/README.md
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+++ b/2023/05/OSS_NA-Container_Registries_not_just_containers/README.md
@@ -0,0 +1,5 @@
+
+Open Source Summit NA 2023 (Vancouver)
+
+[Schedule Link](https://sched.co/1K57C)
+
diff --git a/2023/05/OSS_NA-Container_Registries_not_just_containers/media-types.dot b/2023/05/OSS_NA-Container_Registries_not_just_containers/media-types.dot
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+++ b/2023/05/OSS_NA-Container_Registries_not_just_containers/media-types.dot
@@ -0,0 +1,17 @@
+digraph G {
+  {
+    imageIndex [shape=note, label="Image Index\n<<optional>>\napplication/vnd.oci.image.index.v1+json\napplication/vnd.docker.distribution.manifest.list.v2+json"]
+    {
+      rank=same
+      manifest [shape=note, label="Image manifest\napplication/vnd.oci.image.manifest.v1+json\napplication/vnd.docker.distribution.manifest.v2+json"]
+    }
+    config [shape=note, label="Image config JSON\napplication/vnd.oci.image.config.v1+json\napplication/vnd.docker.container.image.v1+json"]
+    layer [shape=note, label="Layer tar archive\napplication/vnd.oci.image.layer.v1.tar\napplication/vnd.oci.image.layer.v1.tar+gzip\napplication/vnd.oci.image.layer.nondistributable.v1.tar\napplication/vnd.oci.image.layer.nondistributable.v1.tar+gzip\napplication/vnd.docker.image.rootfs.diff.tar.gzip"]
+  }
+
+  imageIndex -> imageIndex [label="1..*"]
+  imageIndex -> manifest [label="1..*"]
+  manifest -> config [label="1..1"]
+  manifest -> layer [label="1..*"]
+  manifest -> manifest [label="0..1"];
+}
diff --git a/2023/05/OSS_NA-Container_Registries_not_just_containers/media-types.png b/2023/05/OSS_NA-Container_Registries_not_just_containers/media-types.png
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