Can define error_pages

defaults/main.yml

@@ -1,2 +1,4 @@
 ---
 path: /
+error_pages:
+  404: /err.html

tasks/main.yml

@@ -26,7 +26,9 @@
             chunked_transfer_encoding off;
             proxy_pass https://storage_nemunaire/{{ bucket }}{{ path }}/;
 
-            error_page 404 /err.html;
+            {% for error_page in error_pages %}
+            error_page {{ error_page }} /{{ error_pages[error_page] }};
+            {% endfor %}
             #try_files $uri $uri/index.html $uri.html =404;
         }
         location ~ /$ {