I need docker-compose.yml file from repository when GIT_STRATEGY is none

GitLab CI/CD
,
1

Hello,

We have a CI pipeline running at our hosted GitLab Community Edition 11.6.1 that two stages running at different runner machines.
I need only the docker-compose.yml from repository at deploy stage but i don’t want to poll all source code at this stage.
So that i set GIT_STRATEGY to none. But this way docker-compose command fails because docker-compose.yml is not there.
I thought generating the docker-compose.yml file with echo or other shell utilities but i worry about correct indentation etc.
How can achive my goal in a clear way?

stages:
  - BUILD
  - DEPLOY

variables:
  APP_IMAGE_TAG: $CI_REGISTRY_IMAGE/$CI_COMMIT_REF_NAME:$CI_COMMIT_SHA  

BUILD:
  stage: BUILD
  script:   
    - docker login -u gitlab-ci-token -p $CI_JOB_TOKEN $CI_REGISTRY
    # build application image
    - docker build -t $APP_IMAGE_TAG .
    - docker push $APP_IMAGE_TAG    
    # Cleaun up
    - docker rmi $APP_IMAGE_TAG    
    - 'docker rm $(docker ps -a -q) || :' # Delete all stopped containers
    - 'docker rmi $(docker images -q --filter "dangling=true") || :' # Delete all untagged images    
    - docker image prune -f
  tags:
     - docker-image-build 

DEPLOY:
  stage: DEPLOY
  variables:
     GIT_STRATEGY: none
  script:   
    - docker login -u gitlab-ci-token -p $CI_JOB_TOKEN $CI_REGISTRY  
    - docker-compose down
    - docker-compose up
  tags:
     - docker-runner