Mastodon nginx: pull from Mastodon's /packs too

installation/mastodon.conf

@@ -97,11 +97,12 @@ server {
     add_header Strict-Transport-Security "max-age=31536000" always;
   }
 
-  # Soapbox build files.
+  # Soapbox & Mastodon (frontend) build files.
   # New builds produce hashed filenames, so these should be cached heavily.
   location /packs {
     add_header Cache-Control "public, max-age=31536000, immutable";
     add_header Strict-Transport-Security "max-age=31536000" always;
+    try_files $uri @mastodon-public;
   }
 
   # Soapbox configuration files.
@@ -116,6 +117,13 @@ server {
     add_header Strict-Transport-Security "max-age=31536000" always;
   }
 
+  # Mastodon public files.
+  # https://github.com/mastodon/mastodon/tree/main/public
+  location @mastodon-public {
+    root /home/mastodon/live/public;
+    try_files $uri /index.html;
+  }
+
   # Proxy to Mastodon's Ruby on Rails backend.
   location @proxy {
     proxy_set_header Host $host;