image: docker:stable

stages:
- build

build amd64:
  stage: build
  tags:
  - amd64
  only:
  - master
  before_script:
  - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
  script:
  - docker pull $CI_REGISTRY_IMAGE:latest || true
  - synversion=$(cat synapse/__init__.py | grep '__version__ = "' | sed -E 's/^__version__ = "(.+)"$/\1/')
  - docker build --pull --cache-from $CI_REGISTRY_IMAGE:latest --tag $CI_REGISTRY_IMAGE:latest --tag $CI_REGISTRY_IMAGE:$synversion .
  - docker push $CI_REGISTRY_IMAGE:latest
  - docker push $CI_REGISTRY_IMAGE:$synversion
  - docker rmi $CI_REGISTRY_IMAGE:latest $CI_REGISTRY_IMAGE:$synversion