image: docker:latest

services:
  - docker:dind

variables:
  DOCKER_DRIVER: overlay

before_script:
  - docker info

variables:
  CONTAINER_IMAGE: link
  CONTAINER_IMAGE_RELEASE: link2

stages:
  - build
  - release

build:
  image: node:carbon
  stage: build
  before_script:
    - npm install -g yarn
    - yarn install
  only:
    - tags
  script:
  - yarn prod
  - docker build -t $CONTAINER_IMAGE .
  - docker push $CONTAINER_IMAGE
  only:
    - branches

release-image:
  stage: release
  script:
  - docker pull $CONTAINER_IMAGE
  - docker tag $CONTAINER_IMAGE $CONTAINER_IMAGE_RELEASE
  - docker push $CONTAINER_IMAGE_RELEASE
  only:
    - master