stages:
- build

variables:
  CACHETAG: build-${VERSION}
  DOCKER_HOST: tcp://docker:2375

services:
- docker:dind

before_script:
- docker info
- docker version
- echo "$CI_JOB_TOKEN" | docker login -u "$CI_REGISTRY_USER" "$CI_REGISTRY" --password-stdin
- env|sort

x86_64:build:
  variables:
    VERSION: x86_64
  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:
  - master

armv7l:build:
  variables:
    VERSION: armv7l
  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
  - armv7l
  only:
  - master