Gitlab CI 共享环境变量

参考链接：https://docs.gitlab.com/ee/ci/yaml/artifacts_reports.html#artifactsreportsdotenv

stages:
  - build
  - deploy

build:
  stage: build
  script:
    - echo "TAG=v1.0.0" >> share.env
  artifacts:
    reports:
      dotenv: share.env

deploy:
  stage: deploy
  script:
    - echo $TAG