add missing retry to the apache docker image pull

roles/matrix-nginx-proxy/tasks/nginx-proxy/setup_metrics_auth.yml

@@ -22,6 +22,10 @@
         source: "{{ 'pull' if ansible_version.major > 2 or ansible_version.minor > 7 else omit }}"
         force_source: "{{ matrix_nginx_proxy_proxy_matrix_metrics_basic_auth_apache_container_force_pull if ansible_version.major > 2 or ansible_version.minor >= 8 else omit }}"
         force: "{{ omit if ansible_version.major > 2 or ansible_version.minor >= 8 else matrix_nginx_proxy_proxy_matrix_metrics_basic_auth_apache_container_force_pull }}"
+      register: result
+      retries: "{{ matrix_container_retries_count }}"
+      delay: "{{ matrix_container_retries_delay }}"
+      until: result is not failed
 
     # We store the password in a file and make the `htpasswd` tool read it from there,
     # as opposed to passing it directly on stdin (which will expose it to other processes on the server).