Implement Drupal deployment through composer

tasks/deploy/gitcomposer.yml

+---
+# file: roles/drupal/tasks/deploy/gitcomposer.yml
+
+- name: "Ensure Repository Directory"
+  file:
+    path: '{{ webRoot }}'
+    state: 'directory'
+    owner: 'root'
+    group: 'root'
+    mode: '775'
+
+- name: "Clone Git Repository"
+  git:
+    accept_hostkey: yes
+    repo: '{{ drupal.src.git.repository }}'
+    dest: '{{ webRoot }}'
+    force: yes
+    version: '{{ drupal.src.git.branch|default(omit) }}'
+  become: false
+
+- name: "Run Composer"
+  composer:
+    command='update'
+    working_dir='{{ webRoot }}'

tasks/install/gitcomposer.yml

+---
+# file: roles/drupal/tasks/install/gitcomposer.yml
+
+# IMPORTANT: The following should be called but really ONLY for new installs.
+- name: "Make Sure Drupal Root Does Not Yet Exist"
+  file:
+    path: '{{ docRoot }}'
+    state: 'absent'

tasks/users/gitcomposer.yml

+---
+# file: roles/drupal/tasks/users/gitcomposer.yml
+
+- name: "Make sure the git group exists"
+  group: name='{{ drupal.src.name }}'
+
+- name: "Add users to git group"
+  user:
+    name='{{ item }}'
+    groups='{{ drupal.src.name }}'
+    append=yes
+  with_items: '{{ drupal.src.users|default([]) }}'
+
+- name: "File Modes and Ownership for Repository"
+  file:
+    path='{{ webRoot }}'
+    owner='root'
+    group='{{ drupal.src.name }}'
+    mode='ug+rw,o+r,o-w'
+    recurse=yes
+
+- name: "Extended File Modes and Ownership for Repository"
+  command: setfacl -dRm u:root:rwX,g:{{ drupal.src.name }}:rwX,o::rX {{ webRoot }}