GitlabCI + AWS s3 + Cloudfront

GitLab CI/CD
1

I have a problem with creating the appropriate . Below is my .gitlab-ci.yml

I do not know what I should write in “export API_URL”
What’s wrong with this code ?

 ```
image: docker:latest

    stages:
      - build
      - deploy

    build:
      stage: build
      image: node:8.11.3
      script:
          - export API_URL=" https://"       (<---  I do not know what I should write here)
      - npm install
      - npm run build
      - echo "BUILD SUCCESSFULLY"
  artifacts:
    paths:
      - dist/
    expire_in: 20 mins
  environment:
    name: production
  only:
    - master

deploy:
  stage: deploy
  image: python:3.5
  dependencies:
    - build
  script:
    - export AWS_ACCESS_KEY_ID=$(my key       // same 
variable we declared in gitlab CI settings
    - export 
AWS_SECRET_ACCESS_KEY=$(my key)
    - export S3_BUCKET_NAME=$(my bucket name)
    - export DISTRIBUTION_ID=$E2Y6FG3UPMSSQ0
    - pip install awscli --upgrade --user
    - export PATH=~/.local/bin:$PATH
    - aws s3 sync --acl public-read --delete dist $web-web
    - aws cloudfront create-invalidation --distribution-id 
$E2Y6FG3UPMSSQ0 --paths '/*'
    - echo "DEPLOYED SUCCESSFULLY"
  environment:
    name: production
  only:
    - master
```