.gitlab-ci.yml

variables:
  DOCKER_DRIVER: overlay2

  DOCKER_BASH_IMAGE_LATEST: "$CI_REGISTRY_IMAGE/common/docker-bash:latest"
  DOCKER_BASH_IMAGE_SHA: "$CI_REGISTRY_IMAGE/common/docker-bash:$CI_COMMIT_SHA"

  BUILD_IMAGE_LATEST: "$CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG/build:latest"
  BUILD_IMAGE_SHA: "$CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG/build:$CI_COMMIT_SHA"
  BUILD_IMAGE_BEFORE_SHA: "$CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG/build:$CI_COMMIT_BEFORE_SHA"

  DIST_IMAGE_LATEST: "$CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG/dist:latest"
  DIST_IMAGE_SHA: "$CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG/dist:$CI_COMMIT_SHA"
  DIST_IMAGE_BEFORE_SHA: "$CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG/dist:$CI_COMMIT_BEFORE_SHA"

before_script:
  - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
  - mkdir empty_dir

image: $DOCKER_BASH_IMAGE_LATEST

services:
  - docker:dind

stages:
  - build:dependencies
  - build:application
  - pack

build:docker-bash:
  stage: build:dependencies
  image: docker:stable
  tags:
    - docker
  only:
    variables:
      - $BUILD_DOCKER_BASH == "true"
  script:
    - docker pull $DOCKER_BASH_IMAGE_LATEST || true
    - docker build --pull -f ci/docker-bash.dockerfile --cache-from $DOCKER_BASH_IMAGE_LATEST --tag $DOCKER_BASH_IMAGE_SHA --tag $DOCKER_BASH_IMAGE_LATEST empty_dir
    - docker push $DOCKER_BASH_IMAGE_LATEST
    - docker push $DOCKER_BASH_IMAGE_SHA

build:balancer:
  stage: build:application
  tags:
    - docker
  except:
    - schedules
  script:
    - bash ci/build-image.sh -f docker/build.dockerfile -c $BUILD_IMAGE_BEFORE_SHA -c $BUILD_IMAGE_SHA -n $BUILD_IMAGE_SHA -n $BUILD_IMAGE_LATEST .
    - bash ci/extract-from-image.sh $BUILD_IMAGE_SHA /tmp/simple-redirect-loadbalancer/build build
  artifacts:
    paths:
      - build
    expire_in: 3 months

pack:dist:
  stage: pack
  tags:
    - docker
  except:
    - schedules
  script:
    - bash ci/build-image.sh -f docker/dist.dockerfile -a BUILD_IMAGE=$BUILD_IMAGE_SHA -c $DIST_IMAGE_BEFORE_SHA -c $DIST_IMAGE_SHA -n $DIST_IMAGE_SHA -n $DIST_IMAGE_LATEST empty_dir