---
.docker-build-setup:
  image: docker:19.03.12
  services:
  - docker:19.03.12-dind
  before_script:
  - apk add --no-cache make

.dockerfile-lint:
  stage: test
  image: hadolint/hadolint:v1.18.0-alpine
  script:
  - "hadolint docker/Dockerfile"

.dockerbuild-test:
  stage: test
  extends: .docker-build-setup

.docker-publish:
  stage: publish
  extends: .docker-build-setup
  before_script:
  - apk add --no-cache make
  - docker login -u ${CI_REGISTRY_USER} -p ${CI_REGISTRY_PASSWORD} ${CI_REGISTRY}
  after_script:
  - docker logout ${CI_REGISTRY}

.test-docker-rules:
  rules:
  - if: '$CI_PIPELINE_SOURCE == "merge_request_event"'
    changes:
    - "docker/Dockerfile"
    when: always

test:dockerfile:lint:
  extends:
  - .dockerfile-lint
  - .test-docker-rules

test:docker:build:
  extends:
  - .dockerbuild-test
  - .test-docker-rules
  script:
  - make image

publish:docker-image:
  extends:
  - .docker-publish
  script:
  - make publish
  rules:
  - if: '$CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH && $CI_PROJECT_PATH == "dananglin/cv"'
    changes:
    - "docker/Dockerfile"
    when: always
  - if: '$CI_PIPELINE_SOURCE == "merge_request_event"'
    when: never