请问circle ci为什么总提示我要迁移到2.0, 我的配置文件已经是.circle/config.yml

Question

配置如下, 请问我还需要改什么呢? 英文不好, 看迁移文档只理解了这么多.

# Javascript Node CircleCI 2.0 configuration file
#
# Check https://circleci.com/docs/2.0/language-javascript/ for more details
#
version: 2
jobs:
  build:
    docker:
      # specify the version you desire here
      - image: circleci/node:8.9.4
      
      # Specify service dependencies here if necessary
      # CircleCI maintains a library of pre-built images
      # documented at https://circleci.com/docs/2.0/circleci-images/
      # - image: circleci/mongo:3.4.4

    working_directory: ~/repo

    steps:
      - checkout

      # Download and cache dependencies
      - restore_cache:
          keys:
          - dependencies-{{ checksum "package.json" }}

      - run: yarn install

      - save_cache:
          paths:
            - node_modules
          key: dependencies-{{ checksum "package.json" }}
        
      # run tests!  
      - run: npm run test