image: docker:latest@sha256:7d85d0eda291f1a7ab6df4a9d1802b5ad4cf9145a088bd11188c78dcb5c7392b

services:
  - docker:dind@sha256:7d85d0eda291f1a7ab6df4a9d1802b5ad4cf9145a088bd11188c78dcb5c7392b

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

build-master:
  stage: build
  script:
    - docker build --pull -t "$CI_REGISTRY_IMAGE" .
    - docker push "$CI_REGISTRY_IMAGE"
  only:
    - master

build:
  stage: build
  script:
    - docker build --pull -t "$CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG" .
    - docker push "$CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG"
  except:
    - master