image: docker:git
services:
- docker:dind

stages:
- build
- test
- release

variables:
  TEST_IMAGE: ${CI_REGISTRY_IMAGE}:$CI_BUILD_REF_NAME
  RELEASE_IMAGE: ${CI_REGISTRY_IMAGE}:latest
  GITLAB_RUNNER_IMAGE: gitlab/gitlab-runner:alpine

before_script:
  - echo $CI_BUILD_TOKEN | docker login -u gitlab-ci-token --password-stdin ${CI_REGISTRY}

build:
  stage: build
  script:
    - apk add --no-cache bash
    - /bin/bash -n overlay/usr/share/gitlab-ci-common overlay/usr/bin/gitlab-ci-*
    - echo Building ${RELEASE_IMAGE}
    - docker build -t $TEST_IMAGE .
    - docker push $TEST_IMAGE

test:
  stage: test
  script:
    - echo Testing ${TEST_IMAGE}
    - git clone https://salsa.debian.org/debian/pidcat.git
    - cd pidcat
    - printf
        "image\x3a ${TEST_IMAGE}\n\ntest:\n  script:\n    - git remote set-url origin https://salsa.debian.org/debian/pidcat.git\n    - /usr/bin/gitlab-ci-git-buildpackage\n"
        > .gitlab-ci.yml
    - docker pull ${TEST_IMAGE}
    - docker run --rm --interactive
        --volume /var/run/docker.sock:/var/run/docker.sock
        --volume $PWD:$PWD --workdir $PWD
        ${GITLAB_RUNNER_IMAGE}
        exec docker
          --docker-volumes "/var/run/docker.sock:/var/run/docker.sock"
          --docker-pull-policy never
          --env "HOSTNAME=$HOSTNAME"
          --env "CI_PROJECT_NAMESPACE=debian"
          --env "CI_PROJECT_NAME=pidcat"
          --env "CI_COMMIT_REF_NAME=`git symbolic-ref HEAD --short`"
          --env "CI_COMMIT_SHA=`git rev-parse HEAD`"
          test
          || true  # remove this line once this succeeds

release:
  stage: release
  script:
    - echo Publishing ${RELEASE_IMAGE}
    - docker pull $TEST_IMAGE
    - docker tag $TEST_IMAGE $RELEASE_IMAGE
    - docker push $RELEASE_IMAGE
  only:
    - master
    - tags