Mastodon nginx: simplify static files

installation/mastodon.conf

@@ -73,7 +73,7 @@ server {
   # Fallback route.
   # Everything not routed should fall back to the SPA.
   location / {
-    try_files /index.html /dev/null;
+    try_files /dev/null @static-files;
   }
 
   # Mastodon backend routes.
@@ -88,21 +88,12 @@ server {
     try_files $activitypub_location $activitypub_location;
   }
 
-  # Mastodon public files.
-  # https://github.com/mastodon/mastodon/tree/main/public
-  # Take only what we need for Soapbox.
-  location ~ ^/(assets|favicon.(ico|png)|browserconfig.xml|embed.js|android-chrome-192x192.png|apple-touch-icon.png|(avatars|headers)/original/missing.png) {
-    root /home/mastodon/live/public;
-    add_header Cache-Control "public, max-age=31536000, immutable";
-    add_header Strict-Transport-Security "max-age=31536000" always;
-  }
-
   # 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;
+    try_files /dev/null @static-files;
   }
 
   # Soapbox configuration files.
@@ -124,6 +115,12 @@ server {
     try_files $uri /index.html;
   }
 
+  # Soapbox & Mastodon static files.
+  # Try Soapbox first, Mastodon, then fall back to the SPA.
+  location @static-files {
+    try_files $uri @mastodon-public;
+  }
+
   # Proxy to Mastodon's Ruby on Rails backend.
   location @proxy {
     proxy_set_header Host $host;