# available variables, do not uncomment all at once.
# variables:
#   CI_BUILDX_ARCHS: "linux/amd64,linux/arm64,linux/arm/v6,linux/arm/v7"
#   CI_BUILD_ARM: true
#   CI_BUILD_ARM64: true
#   CI_AMD64_DISABLED: true


.build:
  image: docker:dind
  stage: build
  services:
    - name: docker:dind
      entrypoint: ["env", "-u", "DOCKER_HOST"]
      command: ["dockerd-entrypoint.sh"]
  variables:
    DOCKER_HOST: tcp://docker:2375/
    DOCKER_DRIVER: overlay2
    # See https://github.com/docker-library/docker/pull/166
    DOCKER_TLS_CERTDIR: ""
  retry: 2
  before_script:
    - |
      if [[ -z "$CI_COMMIT_TAG" ]]; then
        export CI_APPLICATION_REPOSITORY=${CI_APPLICATION_REPOSITORY:-$CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG}
        export CI_APPLICATION_TAG=${CI_APPLICATION_TAG:-$CI_COMMIT_SHA}
      else
        export CI_APPLICATION_REPOSITORY=${CI_APPLICATION_REPOSITORY:-$CI_REGISTRY_IMAGE}
        export CI_APPLICATION_TAG=${CI_APPLICATION_TAG:-$CI_COMMIT_TAG}
      fi
    - echo "$CI_REGISTRY_PASSWORD" | docker login -u $CI_REGISTRY_USER --password-stdin $CI_REGISTRY

# these images depend on this repos image 
# it must exist for for the arch that the gitlab-runner has.
build:buildx-master:
  extends: .build
  # set the image because we are using buildx here.
  image: $CI_REGISTRY_IMAGE:latest
  only: 
    refs:
      - master
    variables:
      - $CI_BUILDX_ARCHS
  script:
    # Use docker-container driver to allow useful features (push/multi-platform)
    - update-binfmts --enable # Important: Ensures execution of other binary formats is enabled in the kernel
    - docker buildx create --driver docker-container --use
    - docker buildx inspect --bootstrap
    - docker buildx ls
    - docker buildx build --platform $CI_BUILDX_ARCHS --progress plain --pull -t "$CI_REGISTRY_IMAGE" --push .

build:buildx:
  extends: .build
  # set the image because we are using buildx here.
  image: $CI_REGISTRY_IMAGE:latest
  only:
    variables:
      - $CI_BUILDX_ARCHS
  except:
    refs:
       - master
  script:
    - update-binfmts --enable # Important: Ensures execution of other binary formats is enabled in the kernel
    - docker buildx create --driver docker-container --use
    - docker buildx inspect --bootstrap
    - docker buildx ls
    - docker buildx build --platform $CI_BUILDX_ARCHS --progress plain --pull -t "$CI_APPLICATION_REPOSITORY:$CI_APPLICATION_TAG" --push .

# disable build:armv7 for now since it seems to have an issue with dind
.build:arm:
  extends: .build
  only:
    variables:
      - $CI_BUILD_ARM
  except:
    variables:
      - $CI_BUILDX_ARCHS
  tags:
    - arm
  script:
    - docker build -t "$CI_APPLICATION_REPOSITORY/arm:$CI_APPLICATION_TAG" .
    - docker push "$CI_APPLICATION_REPOSITORY/arm:$CI_APPLICATION_TAG"

build:arm64:
  extends: .build
  only:
    variables:
      - $CI_BUILD_ARM64
  except:
    variables:
      - $CI_BUILDX_ARCHS
  tags:
    - arm64

  script:
    - docker build -t "$CI_APPLICATION_REPOSITORY/arm64:$CI_APPLICATION_TAG" .
    - docker push "$CI_APPLICATION_REPOSITORY/arm64:$CI_APPLICATION_TAG"

#  builds this by default
build:amd64:
  extends: .build
  except:
    variables:
      - $CI_AMD64_DISABLED
      - $CI_BUILDX_ARCHS
  script:
    - docker build -t "$CI_APPLICATION_REPOSITORY/amd64:$CI_APPLICATION_TAG" .
    - docker push "$CI_APPLICATION_REPOSITORY/amd64:$CI_APPLICATION_TAG"  

build:manifest:
  extends: .build
  stage: deploy
  except:
    variables:
      - $CI_BUILDX_ARCHS
  script:
    - echo "Checking amd86 build..." && [[ -z $CI_AMD64_DISABLED ]] && echo "found" && export CI_MANIFEST_LIST="$CI_APPLICATION_REPOSITORY/amd64:$CI_APPLICATION_TAG"
    - echo "Checking arm build..." && [[ $CI_BUILD_ARM ]] && echo "found" && export CI_MANIFEST_LIST="$CI_MANIFEST_LIST $CI_APPLICATION_REPOSITORY/arm:$CI_APPLICATION_TAG"
    - echo "Checking arm64 build..." && [[ $CI_BUILD_ARM64 ]] && echo "found" && export CI_MANIFEST_LIST="$CI_MANIFEST_LIST $CI_APPLICATION_REPOSITORY/arm64:$CI_APPLICATION_TAG"
    - export DOCKER_CLI_EXPERIMENTAL=enabled
    - echo $CI_MANIFEST_LIST
    - docker manifest create $CI_APPLICATION_REPOSITORY:$CI_APPLICATION_TAG $CI_MANIFEST_LIST && docker manifest push $CI_APPLICATION_REPOSITORY:$CI_APPLICATION_TAG
    - docker manifest create $CI_APPLICATION_REPOSITORY:latest $CI_MANIFEST_LIST && docker manifest push $CI_APPLICATION_REPOSITORY:latest
    - echo "Checking master" && [[ $CI_COMMIT_REF_NAME == "master" ]] && docker manifest create $CI_REGISTRY_IMAGE:latest $CI_MANIFEST_LIST && docker manifest push $CI_REGISTRY_IMAGE:latest