stages:
  - build
  - push

variables:
  BUILT_IMAGE_TAG: built_image
  IMAGE_TAG: ${CI_REGISTRY_IMAGE}
  DOCKER_HUB_IMAGE_TAG: skobkin/murmur
  DOCKER_HUB_LOGIN: skobkin
  DOCKER_HUB_TOKEN: "xxx"

build:
  # https://wiki.alpinelinux.org/wiki/Release_Notes_for_Alpine_3.14.0#faccessat2
  image: docker:23.0.2
  services:
    - docker:23.0.2-dind
  stage: build
  script:
    - docker build -t $BUILT_IMAGE_TAG --no-cache .
    - docker save -o $CI_PROJECT_DIR/images.tar $BUILT_IMAGE_TAG
  artifacts:
    paths:
      - images.tar

push-gitlab-registry:
  image: docker:23.0.2
  services:
    - docker:23.0.2-dind
  stage: push
  only:
    - tags
  script:
    - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
    - docker load -i images.tar
    - docker tag $BUILT_IMAGE_TAG $IMAGE_TAG
    - docker tag $BUILT_IMAGE_TAG $IMAGE_TAG:$CI_COMMIT_TAG
    - docker push $IMAGE_TAG
    - docker push $IMAGE_TAG:$CI_COMMIT_TAG

push-docker-hub-registry:
  image: docker:23.0.2
  services:
    - docker:23.0.2-dind
  stage: push
  only:
    - tags
  script:
    - docker login -u $DOCKER_HUB_LOGIN -p $DOCKER_HUB_TOKEN
    - docker load -i images.tar
    - docker tag $BUILT_IMAGE_TAG $DOCKER_HUB_IMAGE_TAG
    - docker tag $BUILT_IMAGE_TAG $DOCKER_HUB_IMAGE_TAG:$CI_COMMIT_TAG
    - docker push $DOCKER_HUB_IMAGE_TAG
    - docker push $DOCKER_HUB_IMAGE_TAG:$CI_COMMIT_TAG