purl

{
  "$schema": "https://packageurl.org/schemas/purl-type-definition.schema-1.0.json",
  "$id": "https://packageurl.org/types/docker-definition.json",
  "type": "docker",
  "type_name": "Docker image",
  "description": "for Docker images",
  "repository": {
    "use_repository": true,
    "default_repository_url": "https://hub.docker.com"
  },
  "namespace_definition": {
    "note": "The namespace is the registry/user/organization if present.",
    "requirement": "optional"
  },
  "name_definition": {
    "requirement": "required",
    "native_name": "name"
  },
  "version_definition": {
    "requirement": "optional",
    "note": "The version should be the image id sha256 or a tag. Since tags can be moved, a sha256 image id is preferred."
  },
  "examples": [
    "pkg:docker/cassandra@latest",
    "pkg:docker/smartentry/debian@dc437cc87d10",
    "pkg:docker/customer/dockerimage@sha256%3A244fd47e07d10?repository_url=gcr.io"
  ]
}