.gitlab-ci.yml

variables:
  ENGINE_VERSION: 4.26.0
  UE4DOCKER_TAG_NAMESPACE: $CI_REGISTRY/piperift
  # UE4DOCKER_USERNAME: Github username with access to ue4. Defined somewhere else
  # UE4DOCKER_PASSWORD: Github token. Defined somewhere else.

  UE4_MINIMAL_IMAGE: $UE4DOCKER_TAG_NAMESPACE/ue4-minimal
  UE4_FULL_IMAGE: $UE4DOCKER_TAG_NAMESPACE/ue4-full

stages:
  - build
  - push

before_script:
  - pip install ue4-docker
  - ue4-docker setup
  - ue4-docker clean --prune

build:
  stage: build
  tags: [ue4-image-builder]
  only:
    - branches

  script:
    - docker login -u ${CI_REGISTRY_USER} -p ${CI_REGISTRY_PASSWORD} ${CI_REGISTRY}
    - ue4-docker build ${ENGINE_VERSION} --no-engine --pull-prerequisites --exclude templates --monitor
    - docker push ${UE4_MINIMAL_IMAGE}:${ENGINE_VERSION}
    - docker push ${UE4_FULL_IMAGE}:${ENGINE_VERSION}

push_latest:
  stage: push
  tags: [ue4-image-builder]

  rules:
    - if: '$CI_COMMIT_BRANCH == "main"'
      when: on_success
  script:
    - docker pull ${UE4_MINIMAL_IMAGE}:${ENGINE_VERSION}
    - docker pull ${UE4_FULL_IMAGE}:${ENGINE_VERSION}
    - docker image tag ${UE4_MINIMAL_IMAGE}:${ENGINE_VERSION} ${UE4_MINIMAL_IMAGE}:latest
    - docker image tag ${UE4_FULL_IMAGE}:${ENGINE_VERSION} ${UE4_FULL_IMAGE}:latest
    - docker push ${UE4_MINIMAL_IMAGE}:latest
    - docker push ${UE4_FULL_IMAGE}:latest

after_script:
  - docker container prune -f
  - ue4-docker clean --prune