image: docker:20.10.16

variables:
  IMAGE_TAG: $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG
  IMAGE_TAG_RELEASE: $CI_REGISTRY_IMAGE:latest

stages:
  - build
  - release

services:
  - docker:20.10.16-dind

build:
  stage: build
  script:
    - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
    - docker build -t $IMAGE_TAG .
    - docker push $IMAGE_TAG

release:
  stage: release
  script:
    - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
    - docker pull $IMAGE_TAG
    - docker tag $IMAGE_TAG $IMAGE_TAG_RELEASE
    - docker push $IMAGE_TAG_RELEASE
  only:
    - master