Fix: add a retry statement to remote package tasks

Signed-off-by: Hadrien Patte <hadrien.patte@protonmail.com>

roles/nginx-reverse-proxy/tasks/main.yml

@@ -4,6 +4,9 @@
   apt:
     name: nginx
     update_cache: true
+  register: apt_result
+  retries: 3
+  until: apt_result is succeeded
 
 # Install sites
 - name: Configure NGINX sites