Artifact registry support

CONTRIBUTING.md

@@ -25,6 +25,12 @@ You can subscribe and browse the mailing list on [Google Groups][mailing-list].
 
 OCI discussion happens on #opencontainers on [Freenode][] ([logs][irc-logs]).
 
+## Slack
+
+In addition to IRC, https://opencontainers.slack.com/ provides discussions with markdown formatting, with several channels enabling focused discussions.
+
+Gain access to OCI Slack here: https://chat.opencontainers.org/
+
 ## Git
 
 ### Security

README.md

@@ -18,6 +18,8 @@ Following sections give context for aspects of this specification:
 
 ### Registry Administrators
 
+### Registry Operators
+
 ### Client Side Image Tools
 
 ### Container Image Pipeline

artifactTypes/artifactMappingSchema.json

@@ -0,0 +1,68 @@
+{
+  "description": "OpenContainer Artifact Type Mapping Specification",
+  "$schema": "http://json-schema.org/draft-04/schema#",
+  "id": "https://opencontainers.org/schema/artifactMapping",
+  "type": "object",
+  "properties": {
+    "mediaType": {
+      "type": "string",
+      "description": "Uniquely identifies the artifact for computer consumption.",
+      "minLength": 35,
+      "maxLength": 50
+    },
+    "title": {
+      "type": "string",
+      "description": "Represents the name of the type displayed for human consumption.",
+      "minLength": 5,
+      "maxLength": 30
+    },
+    "description": {
+      "type": "string",
+      "description": "Provides a short description of the type for human consumption.",
+      "minLength": 10,
+      "maxLength": 255
+    },
+    "url": {
+      "type": "string",
+      "description": "Provides additional details, intended for consumers of the type.",
+      "format": "url"
+    },
+    "spec": {
+      "type": "string",
+      "description": "References a spec, providing additional details on the type.",
+      "format": "url"
+    },
+    "tools": {
+      "type": "object",
+      "description": "Provides a collection of tools that may be used with artifact type.",
+      "properties": {
+        "title": {
+          "type": "string",
+          "description": "Represents the name of the tool, displayed for human consumption.",
+          "minLength": 5,
+          "maxLength": 30
+        },
+        "url": {
+          "type": "string",
+          "description": "Links to a page where users can download the tool.",
+          "format": "url"
+        }
+      }
+    },
+    "configSchemaReference": {
+      "type": "string",
+      "description": "provides a schema reference for the artifact config object.",
+      "format": "url"
+    },
+    "layerMediaTypes": {
+      "type": "object",
+      "description": "Represents one or more layer mediaTypes, defined by the artifact.",
+      "properties": {
+        "mediaType": {
+          "type": "string",
+          "description": "Represents a valid layer `mediaTypes`for the artifact."
+        }
+      }
+    }
+  }
+}

artifactTypes/vnd.cncf.helm.chart.1/artifactMapping.json

@@ -0,0 +1,19 @@
+{
+  "mediaType": "application/vnd.cncf.helm.config.v1+json",
+  "spec": "https://github.com/helm/helm/blob/master/oci-artifact-mediatypes",
+  "title": "Helm Chart",
+  "description": "The package manager for Kubernetes",
+  "url": "https://helm.sh/",
+  "tools": [
+    {
+      "title": "Helm",
+      "url": "https://github.com/helm/helm#install"
+    }
+  ],
+  "configSchemaReference": "",
+  "layerMediaTypes": [
+    {
+      "mediaType": "application/vnd.cncf.helm.chart.layer.v1.tar"
+    }
+  ]
+}

artifactTypes/vnd.oci.image.1/artifactMapping.json

@@ -0,0 +1,19 @@
+{
+  "mediaType": "application/vnd.oci.image.config.v1+json",
+  "spec": "https://github.com/opencontainers/image-spec/blob/master/layer.md#gzip-media-types",
+  "title": "OCI Image",
+  "description": "OCI Image",
+  "url": "https://www.opencontainers.org/",
+  "tools": [
+    {
+      "title": "OCI Tools",
+      "url": "https://github.com/opencontainers/runtime-tools"
+    }
+  ],
+  "configSchemaReference": "https://raw.githubusercontent.com/opencontainers/image-spec/master/schema/config-schema.json",
+  "layerMediaTypes": [
+    {
+      "mediaType": "application/vnd.oci.image.layer.v1.tar"
+    }
+  ]
+}

artifactTypes/vnd.sylabs.sif.1/artifactMapping.json

@@ -0,0 +1,19 @@
+{
+  "mediaType": "application/vnd.sylabs.sif.config.v1+json",
+  "spec": "https://github.com/sylabs/singularity",
+  "title": "Singularity Image",
+  "description": "High Performance Computing Singularity Image",
+  "url": "https://www.sylabs.io/singularity/",
+  "tools": [
+    {
+      "title": "Singularity CRI",
+      "url": "https://github.com/sylabs/singularity-cri"
+    }
+  ],
+  "configSchemaReference": "",
+  "layerMediaTypes": [
+    {
+      "mediaType": "application/vnd.sylabs.sif.layer.v1.tar"
+    }
+  ]
+}