initial CI file

# For more information, see: https://docs.gitlab.com/ee/ci/yaml/index.html#stages

# predefined variables https://docs.gitlab.com/ee/ci/variables/predefined_variables.html

stages:

  - publish

publish:

  stage: publish

  image: docker:cli

  services:

    - docker:dind

  variables:

    DOCKER_IMAGE_NAME: $CI_REGISTRY_IMAGE:latest

  before_script:

    - echo "CI_REGISTRY_IMAGE $CI_REGISTRY_IMAGE"

    - echo "DOCKER_IMAGE_NAME $DOCKER_IMAGE_NAME"

    - echo "CI_REGISTRY $CI_REGISTRY"

    - echo "DOCKER_HOST $DOCKER_HOST"

    - echo "CI_COMMIT_BRANCH $CI_COMMIT_BRANCH"

    - echo "CI_DEFAULT_BRANCH $CI_DEFAULT_BRANCH"

    - docker info

    - docker login -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD" $CI_REGISTRY

  rules:

    - if: $CI_COMMIT_BRANCH == "main"

      exists:

        - docker/Dockerfile

  environment: Development

  script:

    - echo "Build Docker image..."

    - docker build -t $DOCKER_IMAGE_NAME . -f docker/Dockerfile

    - echo "Publish Docker image..."

    - docker push $DOCKER_IMAGE_NAME

    - echo "image successfully published."