Use simpler file structure

tasks.yml

@@ -0,0 +1,61 @@
+- include_role:
+    name: common
+    tasks_from: 'network.yml'
+- include_role:
+    name: common
+    tasks_from: 'host.yml'
+
+- name: copy apt preference file
+  template:
+    src: '{{ item.src }}'
+    dest: '{{ item.dest }}'
+    owner: root
+    group: root
+    mode: '0600'
+  loop:
+    - {
+        src: 'templates/apt-pin.j2',
+        dest: '/etc/apt/preferences.d/pin-gitlab-runner.pref',
+      }
+
+- name: Add docker gpg key
+  apt_key:
+    id: '{{ docker_gpg_id }}'
+    url: '{{ docker_gpg }}'
+    validate_certs: true
+    state: present
+
+- name: Add gitlab-runner gpg key
+  apt_key:
+    url: '{{ gitlab_runner_gpg }}'
+    validate_certs: true
+    state: present
+
+- name: Add docker repo
+  apt_repository:
+    repo: '{{ docker_repo }}'
+    validate_certs: true
+    state: present
+
+- name: Add gitlab-runner repo
+  apt_repository:
+    repo: '{{ gitlab_repo }}'
+    validate_certs: true
+    state: present
+
+- name: install packages # noqa 403
+  apt:
+    name: '{{ packages }}'
+    update_cache: true
+    state: latest
+  notify:
+    - restart gitlab-runner
+
+- meta: flush_handlers
+
+# see https://gitlab.com/gitlab-org/gitlab-runner/issues/305
+- name: ensure docker is restarted
+  systemd:
+    name: docker
+    state: restarted
+    enabled: true