# https://docs.gitlab.com/ee/ci/docker/using_docker_build.html#docker-alternatives
# Some details from https://major.io/2019/05/24/build-containers-in-gitlab-ci-with-buildah/

build:
  stage: build
  image: quay.io/buildah/stable
  variables:
    # Use vfs with buildah. Docker offers overlayfs as a default, but buildah
    # cannot stack overlayfs on top of another overlayfs filesystem.
    STORAGE_DRIVER: vfs
    # You may need this workaround for some errors: https://stackoverflow.com/a/70438141/1233435
    BUILDAH_ISOLATION: chroot
    FQ_IMAGE_NAME: "$CI_REGISTRY_IMAGE/tcpproxy:$CI_COMMIT_SHORT_SHA"
    FQ_IMAGE_REF_NAME: "$CI_REGISTRY_IMAGE/tcpproxy:$CI_COMMIT_REF_NAME"
  before_script:
    # Log in to the GitLab container registry
    - export REGISTRY_AUTH_FILE=$HOME/auth.json
    - echo "$CI_REGISTRY_PASSWORD" | buildah login --isolation=chroot -u "$CI_REGISTRY_USER" --password-stdin $CI_REGISTRY
  script:
    - buildah images
    - buildah build -t $FQ_IMAGE_NAME
    - buildah tag $FQ_IMAGE_NAME $FQ_IMAGE_REF_NAME
    - buildah images
    - buildah push $FQ_IMAGE_NAME
    - buildah push $FQ_IMAGE_REF_NAME