.install_docker: &install_docker |
      apt-get update
      apt-get -y install apt-transport-https ca-certificates curl software-properties-common
      curl -fsSL https://download.docker.com/linux/debian/gpg | apt-key add -
      add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/debian $(lsb_release -cs) stable"
      apt-get update
      apt-get -y install docker-ce

# This file is a template, and might need editing before it works on your project.
docker-build:
  # Official docker image.
  image: python:3.6.5
  variables:
    DOCKER_HOST: tcp://docker:2375
    DOCKER_TLS_CERTDIR: ""
  stage: build
  tags:
    - docker
  before_script:
    - *install_docker
    - docker info
    - docker login -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD" $CI_REGISTRY
  script:
    - docker build --pull -t "$CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG" .
    - docker push "$CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG"
  except:
    - master
    
docker-build-master:
  # Official docker image.
  image: python:3.6.5
  variables:
    DOCKER_HOST: tcp://docker:2375
    DOCKER_TLS_CERTDIR: ""
  stage: build
  tags:
    - docker
  before_script:
    - *install_docker
    - docker info
    - docker login -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD" $CI_REGISTRY
  script:
    - docker build --pull -t "$CI_REGISTRY_IMAGE" .
    - docker push "$CI_REGISTRY_IMAGE"
  only:
    - master