# Official docker image.
image: docker:latest

variables:
  DOCKER_DRIVER: overlay2
  DOCKER_BUILDKIT: 1

# Docker in Docker Service
services:
  - docker:dind

before_script:
  - docker login -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD" $CI_REGISTRY
  - source environment

build-main:
  script:
    - docker build --cache-from $CI_REGISTRY_IMAGE:stage-src \
      --target src \
      --build-arg BUILDKIT_INLINE_CACHE=1 --pull \
      -t "$CI_REGISTRY_IMAGE:stage-src" \
      -t "$CI_REGISTRY_IMAGE:stage-src-branch-$CI_COMMIT_REF_SLUG" .
    - docker build --cache-from $CI_REGISTRY_IMAGE:stage-texlive-update \
      --target texlive-update \
      --build-arg BUILDKIT_INLINE_CACHE=1 --pull \
      -t "$CI_REGISTRY_IMAGE:stage-texlive-update" \
      -t "$CI_REGISTRY_IMAGE:stage-texlive-update-branch-$CI_COMMIT_REF_SLUG" .
    - docker build --cache-from $CI_REGISTRY_IMAGE \
      --target app --squash \
      --build-arg BUILDKIT_INLINE_CACHE=1 --pull \
      -t "$CI_REGISTRY_IMAGE" \
      -t "$CI_REGISTRY_IMAGE:branch-$CI_COMMIT_REF_SLUG" .
    - docker push "$CI_REGISTRY_IMAGE"
    - docker push "$CI_REGISTRY_IMAGE:branch-$CI_COMMIT_REF_SLUG"
  only:
    - main

build:
  script:
    - docker build --cache-from $CI_REGISTRY_IMAGE --build-arg BUILDKIT_INLINE_CACHE=1 --pull -t "$CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG" .
    - docker push "$CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG"
  except:
    - main