image: docker:19.03.1
services:
  - docker:19.03.1-dind
variables:
  DOCKER_DRIVER: overlay
  DOCKER_TLS_CERTDIR: ""
stages:
  - build

build:
  image: docker:19.03.1
  stage: build
  services:
    - docker:19.03.1-dind
  variables:
    IMAGE_TAG: $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG
  script:
    - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
    - docker build -t $IMAGE_TAG .
    - docker push $IMAGE_TAG
    - docker build -t $CI_REGISTRY_IMAGE:latest .
    - docker push $CI_REGISTRY_IMAGE:latest