.build.yml

include:
  remote: "https://github.com/git-developer/docker-support/raw/v3.4.0/gitlab-ci/docker-template.yml"

variables:
  IMAGE_NAME: "${CI_PROJECT_NAMESPACE}/rudy-${SERVICE}"
  IMAGE_VERSION: "${DISTRO}"
  IMAGE_PLATFORMS: 'linux/amd64,linux/i386,linux/arm64,linux/arm'
  BUILD_ARGS: "SERVICE=${SERVICE}"
  DEFAULT_DISTRO: "alpine"

read_application_tags:
  stage: post_checkout
  image: busybox
  artifacts:
    paths:
    - tags
  script:
  - set -euo pipefail
  - mkdir -p tags
  - build_date="$(date --utc -I)"
  - echo >tags/build-date "${IMAGE_NAME}:${build_date}-${DISTRO}"
  - |
    if test "${DISTRO}" = "${DEFAULT_DISTRO}"; then
      echo >tags/default-build-date "${IMAGE_NAME}:${build_date}"
      echo >tags/default-latest "${IMAGE_NAME}:latest"
    fi

prepare_dockerfile:
  stage: pre_build
  dependencies: []
  image: busybox
  artifacts:
    paths:
    - "${BUILD_CONTEXT}/Dockerfile"
  script:
  - test -e "${BUILD_CONTEXT}/Dockerfile.${DISTRO}" && ln -s "Dockerfile.${DISTRO}" "${BUILD_CONTEXT}/Dockerfile"

build_image:
  dependencies:
  - prepare_build_arguments
  - prepare_dockerfile