image: docker:dind

stages:
  - build
  - deploy

  
default:
  before_script:
  - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY

build-and-push docker image to local registry:
  stage: build
  script:
  - if ! test -z "$DOCKERFILE_DIRECTORY"; then cd ${DOCKERFILE_DIRECTORY}; fi
  - docker build -f "${DOCKERFILE_NAME}" -t "${CI_REGISTRY_IMAGE}:${DOCKER_IMAGE_TAG}" --progress=plain .
  - docker push "${CI_REGISTRY_IMAGE}:${DOCKER_IMAGE_TAG}"

push docker to destination registry:
  stage: deploy
  script:
  - if test -z "$DOCKER_REGISTRY"; then exit 0; fi
  - docker pull "${CI_REGISTRY_IMAGE}:${DOCKER_IMAGE_TAG}"
  - docker tag "${CI_REGISTRY_IMAGE}:${DOCKER_IMAGE_TAG}" "${DOCKER_REGISTRY}:${DOCKER_IMAGE_TAG}"
  - docker push "${DOCKER_REGISTRY}:${DOCKER_IMAGE_TAG}"
  needs:
    - "build-and-push docker image to local registry"