tests:
  image: 'debian:stable-slim'
  before_script:
    - apt update && apt-get -y install gcc make
    - useradd --create-home testuser
    - chown -R testuser .
    - chmod -R go-w .
  script:
    - LANG=C.UTF-8 su testuser -c 'make test'
  artifacts:
    when: always
    paths:
      - tests/test.out