# This file is a template, and might need editing before it works on your project.
# To contribute improvements to CI/CD templates, please follow the Development guide at:
# https://docs.gitlab.com/ee/development/cicd/templates.html
# This specific template is located at:
# https://gitlab.com/gitlab-org/gitlab/-/blob/master/lib/gitlab/ci/templates/Docker.gitlab-ci.yml

# Build a Docker image with CI/CD and push to the GitLab registry.
# Docker-in-Docker documentation: https://docs.gitlab.com/ee/ci/docker/using_docker_build.html
#
# This template uses one generic job with conditional builds
# for the default branch and all other (MR) branches.

docker-build:
  image: docker:latest
  stage: build
  services:
    - docker:dind
  variables:
    DOCKER_IMAGE_NAME: $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG
    # Define the platforms
    PLATFORMS: linux/amd64,linux/arm64/v8
  before_script:
    - apk add --no-cache docker-cli-buildx
    - docker login -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD" $CI_REGISTRY
    - docker buildx create --use
  script:
    - |
      docker buildx build --pull --platform $PLATFORMS -t "$DOCKER_IMAGE_NAME" . --push
    - |
      if [[ "$CI_COMMIT_BRANCH" == "$CI_DEFAULT_BRANCH" ]]; then
        docker buildx build --platform $PLATFORMS -t "$CI_REGISTRY_IMAGE:latest" . --push
      fi
  rules:
    - if: $CI_COMMIT_BRANCH
      exists:
        - Dockerfile