# stages:
#   - build
#   - test
#   - deploy

# services:
#   - docker:stable-dind

# build-latest:
#   image: docker:stable
#   stage: build
#   only:
#     - main
#   script:
#     - docker login -u gitlab-ci-token -p $CI_JOB_TOKEN $CI_REGISTRY

#     - docker pull $CI_REGISTRY_IMAGE:latest || true
#     - docker build --cache-from $CI_REGISTRY_IMAGE:latest -t $CI_REGISTRY_IMAGE .

#     - docker tag $CI_REGISTRY_IMAGE:latest $CI_REGISTRY_IMAGE:latest

#     - docker push $CI_REGISTRY_IMAGE:latest

image: docker:stable

stages:
  - build
  - push

before_script:
  - echo -n $CI_JOB_TOKEN | docker login -u gitlab-ci-token -p $CI_JOB_TOKEN $CI_REGISTRY

Build:
  stage: build
  script:
    - docker pull $CI_REGISTRY_IMAGE:latest || true
    - >
      docker build
      --pull
      --build-arg VCS_REF=$CI_COMMIT_SHA
      --build-arg VCS_URL=$CI_PROJECT_URL
      --cache-from $CI_REGISTRY_IMAGE:latest
      --tag $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA
      .
    - docker push $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA

Push latest:
  variables:
    GIT_STRATEGY: none
  stage: push
  only:
    - main
  script:
    - docker pull $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA
    - docker tag $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA $CI_REGISTRY_IMAGE:latest
    - docker push $CI_REGISTRY_IMAGE:latest

Push tag:
  variables:
    GIT_STRATEGY: none
  stage: push
  only:
    - tags
  script:
    - docker pull $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA
    - docker tag $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_NAME
    - docker push $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_NAME