docker-build.yaml

stages:
  - docker build

docker:image:
  stage: docker build
  image: docker
  when: manual
  variables:
    DOCKER_HOST: tcp://docker-service.gitlab-managed-apps:2375
    DOCKER_DRIVER: overlay2
    DOCKER_API_VERSION: "1.36"
  only:
    - tags
  services:
    - docker:dind
  before_script:
    - docker login -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD" $CI_REGISTRY
  script:
    - apk update && apk add jq && apk add --update coreutils
    - export IMAGE_VER=`jq -r '.["version"]' 2048/package.json`
    - echo $IMAGE_VER
    - docker build -t $CI_PROJECT_NAME:$IMAGE_VER .
    # push only for tags
    - docker tag $CI_PROJECT_NAME:$IMAGE_VER zylwin/$CI_PROJECT_NAME:$IMAGE_VER
    - docker push $REGISTRY_URL/$CI_PROJECT_NAME:$IMAGE_VER
  tags:
    - build