gitlab: Add dependency proxy feature config

roles/gitlab/defaults/main.yml

@@ -99,6 +99,10 @@ gitlab_csp:
 gitlab_registry:
   enabled: false
 
+# Gitlab dependency proxy feature (see https://docs.gitlab.com/ee/administration/packages/dependency_proxy.html)
+gitlab_dependency_proxy:
+  enabled: false
+
 # Enable the packages feature (see https://docs.gitlab.com/ee/administration/packages/index.html)
 gitlab_packages:
   enabled: false

roles/gitlab/templates/docker-compose.yml

@@ -106,6 +106,11 @@ services:
         gitlab_rails['packages_enabled'] = true
 {% endif %}
 
+{% if gitlab_dependency_proxy.enabled %}
+        # Gitlab dependency proxy
+        gitlab_rails['dependency_proxy_enabled'] = true
+{% endif %}
+
 {% if gitlab_registry.enabled %}
         # Gitlab registry
         gitlab_rails['registry_enabled'] = true