update with latest build versions, includes custom build for postgres and migrating from v16 to v18

build/bookwyrm/bookwyrm-web/nginx.conf

@@ -77,6 +77,12 @@ http {
             add_header Content-Type text/plain;
         }
 
+        # Static files served via S3/CDN (bm.keyboardvagabond.com)
+        # No local static file serving needed when USE_S3=true
+        
+        # Images also served via S3/CDN  
+        # No local image serving needed when USE_S3=true
+
         # ActivityPub and federation endpoints
         location ~ ^/(inbox|user/.*/inbox|api|\.well-known) {
             proxy_pass http://127.0.0.1:8000;