如何使用Docker在主机上拉项目？

我正在学习gitlab-ci.yml ，我开始阅读有关环境的知识 ，是否可以访问主机上的文件夹并在deploy阶段执行git pull命令？

 image: php:5.6 # The folders we should cache cache: paths: - vendor/ before_script: # Install git, the php image doesn't have installed - apt-get update -yqq - apt-get install git mysql-client -yqq # Install mysql driver - docker-php-ext-install pdo_mysql # Install composer - curl -sS https://getcomposer.org/installer | php # Install all project dependencies - php composer.phar install services: - mysql variables: MYSQL_DATABASE: test MYSQL_ROOT_PASSWORD: root test: stage: test script: - echo "CREATE DATABASE IF NOT EXISTS test;" | mysql --user=root --password="${MYSQL_ROOT_PASSWORD}" --host=mysql - mysql --user=root --password="${MYSQL_ROOT_PASSWORD}" --host=mysql test < tests/assets/test.sql - php composer.phar tests deploy_staging: stage: deploy script: - echo "Deploying to staging server..." environment: name: staging url: http://staging.example.com only: - master 

基本上我所有的脚本都是导入数据库文件并执行PDO服务的testing。 只是一个随机testing，以了解CI。

现在，而不是：

 - echo "Deploying to staging server..." 

我想知道如何能够实现这样的事情：

 - cd /path/on/host/machine/to/repository - git pull 

如果没有，是否有替代scheme来完成我想要做的事情？