x86_64:build:
  variables:
    VERSION: x86_64-stretch
  stage: build
  image: docker:latest
  script:
  - if [ -f init ]; then chmod 500 init; fi
  - docker pull ${CI_REGISTRY_IMAGE}:${CACHETAG} || true
  - docker build --cache-from ${CI_REGISTRY_IMAGE}:${CACHETAG} -t ${CI_REGISTRY_IMAGE}:${VERSION} -t ${CI_REGISTRY_IMAGE}:${CACHETAG} .
  - docker push ${CI_REGISTRY_IMAGE}:${VERSION}
  - docker push ${CI_REGISTRY_IMAGE}:${CACHETAG}
  tags:
  - docker
  - x86_64
  only:
  - stretch