variants:
  default:
    CONFIG: default
    GO_VERSION: '1.15.5'
    BAZEL_VERSION: '3.4.1'
    OLD_BAZEL_VERSION: '2.2.0'
    SKOPEO_VERSION: 'v1.2.0'
  '1.19':
    CONFIG: '1.19'
    GO_VERSION: '1.15.3'
    BAZEL_VERSION: '2.2.0'
    OLD_BAZEL_VERSION: '0.23.2'
    SKOPEO_VERSION: 'v1.2.0'
  '1.18':
    CONFIG: '1.18'
    GO_VERSION: '1.13.15'
    BAZEL_VERSION: '2.2.0'
    OLD_BAZEL_VERSION: '0.23.2'
    SKOPEO_VERSION: 'v1.2.0'
  '1.17':
    CONFIG: '1.17'
    GO_VERSION: '1.13.15'
    BAZEL_VERSION: '2.2.0'
    OLD_BAZEL_VERSION: '0.23.2'
    SKOPEO_VERSION: 'v1.2.0'

variants:
  default:
    CONFIG: default
    GO_VERSION: '1.15.5'
    BAZEL_VERSION: '3.4.1'
    OLD_BAZEL_VERSION: '2.2.0'
    SKOPEO_VERSION: 'v1.2.0'
  '1.20':
    CONFIG: '1.20'
    GO_VERSION: '1.15.5'
    BAZEL_VERSION: '3.4.1'
    OLD_BAZEL_VERSION: '2.2.0'
    SKOPEO_VERSION: 'v1.2.0'
  '1.19':
    CONFIG: '1.19'
    GO_VERSION: '1.15.3'
    BAZEL_VERSION: '2.2.0'
    OLD_BAZEL_VERSION: '0.23.2'
    SKOPEO_VERSION: 'v1.2.0'
  '1.18':
    CONFIG: '1.18'
    GO_VERSION: '1.13.15'
    BAZEL_VERSION: '2.2.0'
    OLD_BAZEL_VERSION: '0.23.2'
    SKOPEO_VERSION: 'v1.2.0'
  '1.17':
    CONFIG: '1.17'
    GO_VERSION: '1.13.15'
    BAZEL_VERSION: '2.2.0'
    OLD_BAZEL_VERSION: '0.23.2'
    SKOPEO_VERSION: 'v1.2.0'

Add 1.20 variant for k8s-ci-builder image
releng: Add 1.20 variant for k8s-ci-builder image
