.gitlab-ci.yml

## Use docker image as a base image.
image: docker:stable

services:
  ## Allow building docker images inside of docker. Notice that it's different
  ## from Docker-from-Docker. https://docs.gitlab.com/ee/ci/docker/using_docker_build.html
  - name: docker:dind
    entrypoint: ["env", "-u", "DOCKER_HOST"]
    command: ["dockerd-entrypoint.sh"]
    alias: docker


stages:
  - build
  - deploy

## Setup cache path for PIP packages.
## See: https://docs.gitlab.com/ee/ci/caching/#cache-python-dependencies
cache:
  paths:
    - .cache/pip


variables:
  ## Name for the generated image. Change this if you wish, but watch out
  ## for special characters!
  APP_IMAGE_NAME: ${DOCKER_REGISTRY}/tjts5901

  ## (Optional) More verbose output from pipeline
  #CI_DEBUG_TRACE: "true"

  # When using dind service, we need to instruct docker to talk with
  # the daemon started inside of the service. The daemon is available
  # with a network connection instead of the default
  # /var/run/docker.sock socket.
  DOCKER_HOST: tcp://docker:2376

  # shared volume for docker-in-docker
  DOCKER_TLS_CERTDIR: "/certs"
  DOCKER_CERT_PATH: "$DOCKER_TLS_CERTDIR/client"
  PIP_CACHE_DIR: "$CI_PROJECT_DIR/.cache/pip"

## Build docker image
build:
  image: docker:stable
  stage: build

  before_script:
    ## Make some checks that Docker credentials are configured.
    - test -z "${DOCKER_REGISTRY}" && (echo "Missing required variable DOCKER_REGISTRY. See 'Pipeline setup.md'"; exit 1)
    - test -z "${DOCKER_AUTH_CONFIG}" && (echo "Missing required variable DOCKER_AUTH_CONFIG. See 'Pipeline setup.md'"; exit 1)
    - docker info

  script:
    ## Build a new image, pulling the latest base, and tag it.
    ## If --pull is ommited, base from local is used.
    - docker build --pull -t $APP_IMAGE_NAME .
    ## Tag the build image for registry, and push it.
    #- docker tag "${APP_IMAGE_NAME}" "${DOCKER_REGISTRY}:${APP_IMAGE_NAME}"
    - docker push "${DOCKER_REGISTRY}:${APP_IMAGE_NAME}"


## Build course documentation. You might not need this stage.
pages:
  stage: build

  ## Use build from previous stage as base image.
  dependencies:
    - build
  image: $APP_IMAGE_NAME