Add temporary domain

[dacook]

• closes [Upgrade Ubuntu] ie_prod #958

This allows the logo url to just work: https://ubuntu-20.openfoodnetwork.ie/rails/active_storage/blobs/redirect/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBBbmtiIiwiZXhwIjpudWxsLCJwdXIiOiJibG9iX2lkIn19--e8d2b206705f494e912bb88b59a4b77f4c679022/ofn-ireland-logo.png

I've also added a redirect in /etc/nginx/sites-available/:

# Temporary redirect after server migration (dcook 2024-11-07)
server {
   listen 80;
   listen 443;
   server_name  ubuntu-20.openfoodnetwork.ie;

   return 301 https://openfoodnetwork.ie$request_uri;
}

I have to admit I'm confused why this works, I haven't put it in sites-enabled yet. But the main thing is that it's working.

[dacook]

@cillian this is the update that I've added to your server.
If you can confirm that all images are now loading without the ubuntu-20 subdomain, then I'll close this PR to keep the config clean.

[cillian]

@dacook yes all images are loading without the ubuntu-20 now. Thanks

[dacook]

Great