.gitlab-ci.yml

image: docker:stable

services:
  - docker:dind

variables:
  CONTAINER_IMAGE: registry.gitlab.com/$CI_PROJECT_PATH
  DOCKER_DRIVER: overlay2
  GIT_SUBMODULE_STRATEGY: recursive

before_script:
  - docker login -u gitlab-ci-token -p $CI_JOB_TOKEN registry.gitlab.com
  - docker run --rm --privileged multiarch/qemu-user-static:register || true

build-arm:
  stage: build
  script:
    - docker pull $CONTAINER_IMAGE:ARM32V6-$CI_COMMIT_REF_SLUG || true
    - docker build -f Dockerfile.ARM32V6 --cache-from $CONTAINER_IMAGE:ARM32V6-$CI_COMMIT_REF_SLUG --tag $CONTAINER_IMAGE:$CI_BUILD_REF --tag $CONTAINER_IMAGE:ARM32V6-$CI_COMMIT_REF_SLUG .
    - test -n "$CI_BUILD_TAG" && docker tag $CONTAINER_IMAGE:$CI_BUILD_REF $CONTAINER_IMAGE:ARM32V6-$CI_BUILD_TAG || true
    - docker push $CONTAINER_IMAGE:$CI_BUILD_REF
    - docker push $CONTAINER_IMAGE:ARM32V6-$CI_COMMIT_REF_SLUG
    - test -n "$CI_BUILD_TAG" && docker push $CONTAINER_IMAGE:ARM32V6-$CI_BUILD_TAG || true