stages:
  - verify

services:
  - name: docker:dind
    # explicitly disable tls to avoid docker startup interruption
    command: [ "--tls=false" ]

variables:
  # Instruct Testcontainers to use the daemon of DinD.
  DOCKER_HOST: "tcp://docker:2375"
  # Instruct Docker not to start over TLS.
  DOCKER_TLS_CERTDIR: ""
  # Improve performance with overlayfs.
  DOCKER_DRIVER: overlay2

test:
  image: docker
  stage: verify
  script:
    - docker run -it alpine echo test