stages:
  - build

build:
  stage: build
  image: docker:latest
  services:
    - docker:dind
  before_script:
    - docker login -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD" "$CI_REGISTRY"
  script:
    - docker build --pull -t "$CI_REGISTRY_IMAGE:$CI_COMMIT_SHORT_SHA" -t "$CI_REGISTRY_IMAGE:latest" .
    - docker push --all-tags "$CI_REGISTRY_IMAGE"
  rules:
    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH