@redocly/openapi-core/src/__tests__/fixtures/refs/hosted.yaml

See https://github.com/Redocly/redocly-cli

openapi: '3.0.3'
info:
  title: bugtest
  version: '1.0'
  description: Demo
  license:
    name: DEMO
    url: https://demo.com
servers:
  - url: http://demo.com/api
paths:
  /customer:
    summary: 'Customer scope'
    get:
      summary: 'Get demo no refs'
      operationId: GetCustomer
      description: 'Returns Demo No Refs'
      responses:
        200:
          description: Demo No Refs
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Customer'
components:
  schemas:
    Customer:
      type: object
      properties:
        customerName:
          type: string
        accounts:
          type: array
          items:
            $ref: 'https://someexternal.schema'