仅在一个容器中运行CircleCI步骤

Question

我有以下CircleCi设置：

version: 2
environment:
  TZ: '/usr/share/zoneinfo/UTC'

jobs:
  build:
    parallelism: 3
    working_directory: ~/circleci-dashboard
    docker:
      - image: mat/circleci-dashboard:0.1.1
        environment:
          PGHOST: 127.0.0.1
          PGUSER: ubuntu
          RAILS_ENV: test
      - image: circleci/postgres:9.6-alpine
        environment:
          POSTGRES_USER: ubuntu
          POSTGRES_DB: circle_test
          POSTGRES_PASSWORD: ''
      - image: redis:2.8.19
    resource_class: large
    steps:
      - checkout

      - type: cache-restore
        key: dashboard-{{ checksum "Gemfile.lock" }}

      - run:
          name: 'Install gems'
          command: bundle install --jobs=4 --path /home/circleci/circleci-dashboard/vendor/bundle

      - type: cache-save
        key: dashboard-{{ checksum "Gemfile.lock" }}
        paths:
          - /home/circleci/circleci-dashboard/vendor/bundle

      - run:
          name: Update apt
          working_directory: /
          command: |
            apt-get update -y

      - run:
          name: Install Chrome headless dependencies
          working_directory: /
          command: |
            apt-get install -yq gconf-service libasound2 libatk1.0-0 libc6 libcairo2 libcups2 libdbus-1-3 \
            libexpat1 libfontconfig1 libgcc1 libgconf-2-4 libgdk-pixbuf2.0-0 libglib2.0-0 libgtk-3-0 libnspr4 \
            libpango-1.0-0 libpangocairo-1.0-0 libstdc++6 libx11-6 libx11-xcb1 libxcb1 libxcomposite1 \
            libxcursor1 libxdamage1 libxext6 libxfixes3 libxi6 libxrandr2 libxrender1 libxss1 libxtst6 \
            ca-certificates fonts-liberation libappindicator1 libnss3 lsb-release xdg-utils wget default-jre --fix-missing

      - run:
          name: Install Chrome headless
          working_directory: /
          command: |
            wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add - && \
              echo "deb http://dl.google.com/linux/chrome/deb/ stable main" > /etc/apt/sources.list.d/google.list && \
              apt-get update && \
              apt-get install -y dbus-x11 google-chrome-stable && \
              rm -rf /var/lib/apt/lists/*

      - type: cache-restore
        key: dashboard-{{ checksum "public/package.json" }}

      - type: cache-restore
        key: dashboard-{{ checksum "public/package-lock.json" }}

      - run:
          name: 'Install node_modules'
          command: cd public && npm i

      - type: cache-save
        key: dashboard-{{ checksum "public/package.json" }}
        paths:
          - node_modules

      - type: cache-save
        key: dashboard-{{ checksum "public/package-lock.json" }}
        paths:
          - node_modules

      - run:
          name: 'Leave code review comments'
          command: bundle exec pronto run -f github_status github_pr_review -c origin/master

      - run:
          name: 'Lint Polymer Components'
          command: cd public && npm run lint

      - run:
          name: 'Unit-test Polymer Components'
          command: cd public && npm test

      - run:
          name: 'Package Polymer Components'
          command: cd public && npm run prod

      - run:
          name: 'Create database.yml'
          command: mv config/database.ci.yml config/database.yml

      - run:
          name: Set up Dashboard database
          command: bundle exec rake db:structure:load --trace

      - run: mkdir ~/rspec

      - run:
          name: 'Run tests'
          command: |
            bundle exec rspec --format progress \
                              --format RspecJunitFormatter \
                              -o ~/rspec/rspec.xml \
                              $(circleci tests glob "spec/**/*_spec.rb" | circleci tests split --split-by=timings)

问题是，以下任务在每个容器中启动：

      - run:
          name: 'Lint Polymer Components'
          command: cd public && npm run lint

是否可以将这一步骤配置为仅在一个容器中启动？