gitlab cicd流水线 安装composer

最近在研究，流水线检查代码格式,workspace有什么镜像可以用吗？

我的配置还差点什么吗？ 请有空的大佬们帮小弟瞅下，感激不尽

image:  workspace:7.4
services:
  - mariadb:10.2.14
  - redis:5.0.10
.change_file_permissions: &change_file_permissions |
  find . -type f -not -path "./vendor/*" -exec chmod 664 {} \;
  find . -type d -not -path "./vendor/*" -exec chmod 775 {} \;
composer:
  stage: build
  cache:
    key:
      files:
        - platform/composer.json
    paths:
      - platform/storage
      - platform/vendor
      - platform/composer.lock
  script:
    - cd platform
#    - apt-get install yum
#    - yum install dnf
#    - dnf -y install dnf-utils
#    - dnf module install php:remi-7.4
#    - dnf update
#    - yum install php-xxx
#    - systemctl start php-fpm.service
#    - curl -sS https://getcomposer.org/installer | php
#    - mv composer.phar /usr/local/bin/composer
    - if [ ! -x "vendor" ];then
      echo 'vendor not exists';
      composer install --prefer-dist --no-ansi --no-interaction --no-progress --no-scripts;
      else
      echo 'vendor exists';
      fi
    - cp .env.example .env
    - php artisan key:generate
    - cat $OAUTH_PUBLIC > storage/oauth-public.key
    - cat $OAUTH_PRIVATE > storage/oauth-private.key
  artifacts:
    expire_in: 7 day
    paths:
      - platform/.env
      - platform/composer.lock
      - platform/public/
      - platform/storage/oauth-private.key
      - platform/storage/oauth-public.key


store-npm-codestyle:
  stage: test
  script:
    - cd platform
    - composer run lint