.gitlab-ci.yml

stages:
  - lint
  - build

variables:
  ENTRYPOINT_SCRIPTS_VERSION: '1.3.0'
  IMAGE_NAME: "cytomine/postgis"
  IMAGE_VERSION: "${CI_COMMIT_TAG}"
  POSTGIS_VERSION: "15-3.3-alpine"
  # Those other vars should be inherited from GitLab:
  # DOCKER_HUB_AUTH_CONFIG


workflow:
  rules:
    # Avoid the pipeline to be triggered for merge request event, because it would be a duplicated event when
    #  a push is made on a branch that has an open merge request linked (as suggested in the default GitLab workflow)
    - if: $CI_PIPELINE_SOURCE == 'merge_request_event'
      when: never

    # TODO: reuse the tag regexp common job/rule
    # Publish it if it has ANY tag.
    - if: $CI_COMMIT_TAG != null
      variables:
        IS_OPEN_SOURCE_RELEASE_CANDIDATE: "true"

    - when: always

default:
  tags:
    - docker


lint-dockerfiles:
  stage: lint
  image: hadolint/hadolint:latest-alpine
  # Uncomment to silent some warnings if needed
  #variables:
  #  HADOLINT_OPT: --ignore DL3008
  script:
    - hadolint ${HADOLINT_OPT} Dockerfile
  rules:
    - changes:
        - Dockerfile
      when: always

    # If the Dockerfile has not been changed, this job can be skipped and manually invoked later
    - when: manual
      allow_failure: true

build-docker-image:
  stage: build
  image: docker:latest
  rules:
    - if: $IS_OPEN_SOURCE_RELEASE_CANDIDATE == 'true'
  script:
    - echo "The tag $CI_COMMIT_TAG has been pushed. Build & publish the image."

    - echo "Build the docker image ${DOCKER_IMAGE_NAME}:${IMAGE_VERSION}"
    - | 
      docker build \
        --build-arg ENTRYPOINT_SCRIPTS_VERSION=${ENTRYPOINT_SCRIPTS_VERSION} \
        --build-arg IMAGE_VERSION=${IMAGE_VERSION} \
        --build-arg IMAGE_REVISION=${CI_COMMIT_SHORT_SHA} \
        --build-arg POSTGIS_VERSION=${POSTGIS_VERSION} \
        -t ${IMAGE_NAME}:${IMAGE_VERSION} \
        -t ${IMAGE_NAME}:latest \
        -f Dockerfile \
        .

    # Use credential helper (see https://docs.docker.com/engine/reference/commandline/login/#credentials-store)
    - mkdir -p $HOME/.docker && echo $DOCKER_HUB_AUTH_CONFIG > $HOME/.docker/config.json
    - echo "Registry credentials configured at $HOME/.docker/config.json"

    - echo "Pushing image to registry, tagged as ${IMAGE_NAME}:${IMAGE_VERSION} and ${IMAGE_NAME}:latest"
    - docker push ${IMAGE_NAME}:${IMAGE_VERSION}
    - docker push ${IMAGE_NAME}:latest
    - echo "Successfully pushed docker image ${IMAGE_NAME}:${IMAGE_VERSION} and ${IMAGE_NAME}:latest"