- name: Install Docker dependencies
  apt:
    name: [ 'ca-certificates', 'curl', 'gnupg', 'lsb-release' ]
    state: latest
    update_cache: yes

- name: Add Docker GPG key
  apt_key:
    url: https://download.docker.com/linux/debian/gpg
    state: present

- name: Add Docker repository
  apt_repository:
    repo: deb https://download.docker.com/linux/debian buster stable
    state: present

- name: Install Docker
  apt:
    name: [ 'docker-ce', 'docker-ce-cli', 'containerd.io' ]
    state: latest
    update_cache: yes

- name: Start Docker
  service:
    name: docker
    state: started
    enabled: yes

- name: Add GitLab repository
  shell:
    cmd: curl -L https://packages.gitlab.com/install/repositories/runner/gitlab-runner/script.deb.sh | bash
    creates: /etc/apt/sources.list.d/runner_gitlab-runner.list

- name: Pin gitlab-runner package
  copy:
    dest: /etc/apt/preferences.d/pin-gitlab-runner.pref
    content: |
      Explanation: Prefer GitLab provided packages over the Debian native ones
      Package: gitlab-runner
      Pin: origin packages.gitlab.com
      Pin-Priority: 1001

- name: Install GitLab Runner
  apt:
    name: gitlab-runner
    state: latest
    update_cache: yes

- name: Register runner with GitLab
  command: 
    cmd: >
      gitlab-runner register
      --non-interactive
      --url "https://git.vimium.com"
      --executor "docker"
      --docker-image alpine:latest
      --description "docker-runner"
      --tag-list "docker,hetzner"
      --run-untagged="true"
      --locked="false"
      --access-level="not_protected"
      --registration-token '{{ gitlab_runner_registration_token }}' && touch /etc/gitlab-runner-registered
    creates: /etc/gitlab-runner-registered
  no_log: true