[ERROR]: unsupported provider 'artifactory'

[yk-littlepay]

here is an example of the step

steps:
  - label: ':docker: Build CDK App image'
    key: cdk-app-build
    plugins:
      - docker-cache#v1.0.0:
          provider: artifactory
          artifactory:
            registry-url: $CDK_IMAGE_HOST
          image: $CDK_IMAGE_NAME
          tag: some-app-$BUILDKITE_COMMIT
          target: runtime
          strategy: artifact
          context: cdk/docker/app
          build-args:
            - CDK_IMAGE_HOST=$CDK_IMAGE_HOST
            - CDK_IMAGE_NAME=$CDK_IMAGE_NAME
            - CDK_IMAGE_BASE_VER=$CDK_IMAGE_BASE_VER
          ecr:
            region: ap-southeast-1
            account-id: 12345678901
          propagate-environment: true
    agents:
      queue: some-dev

that cause an error like

[ERROR]: unsupported provider 'artifactory'

[INFO]: Supported providers: ecr, gar