Changed repository pull to warning if not successfull due to github.com down

roles/server_docker-roulette-wheel/tasks/main.yml

@@ -19,6 +19,13 @@
     update: yes
   notify: recreate and build roulette-wheel
   become: true
+  register: git_result
+  ignore_errors: true
+
+- name: Warn if repo is not reachable
+  debug:
+    msg: "Warning: Repository is not reachable."
+  when: git_result.failed
 
 - name: add docker-compose.yml
   template: src=docker-compose.yml.j2 dest={{docker_compose_path}}docker-compose.yml