如果环境在剧本中定义，为什么在任务中没有定义环境？

Question

我尝试使用代理Squid安装https://github.com/solval/ansible-role-gitlab_runner。

我使用http_proxy，https_proxy添加了环境

cat gitlab-runner.yml 
- hosts: gitlab-runner
  become: yes
  roles:
    - solval.gitlab_runner
  environment:
    http_proxy: http://192.168.88.249:3128
    https_proxy: http://192.168.88.249:3128

如果重写任务：

- name: RHEL Install GitLab GPG
  rpm_key:
    state: present
    key: https://packages.gitlab.com/gpg.key
  environment:
    http_proxy: http://192.168.88.249:3128
    https_proxy: http://192.168.88.249:3128
  become: yes

具有环境的任务（http_proxy，https_proxy）-正常工作。 如果环境在剧本中定义，为什么在任务中没有定义环境？ 坦克！