workflow:
  rules:
    - if: '$CI_COMMIT_BRANCH == "build"'

stages:
  - build

default:
  image: docker
  services:
    - docker:dind
  before_script:
    - "echo $CI_REGISTRY_PASSWORD | docker login $CI_REGISTRY --username $CI_REGISTRY_USER --password-stdin"
    - "docker info"

buildAndPublish:
  stage: build
  variables:
    IMAGE_NAME: "${CI_REGISTRY_IMAGE}"
  script:
    - "docker build . --tag ${IMAGE_NAME}:latest --tag ${IMAGE_NAME}:${CI_COMMIT_SHORT_SHA}"
    - "docker push --all-tags $IMAGE_NAME"