Update file-upload.md (#1346)

Author: brettins

core/file-upload.md

@@ -231,6 +231,19 @@ your data, you will get a response looking like this:
 }
 ```
 
+## Accessing Your Media Objects Directly
+
+You will need to modify your Caddyfile to allow the above `contentUrl` to be accessed directly. If you followed the above configuration for the VichUploaderBundle, that will be in `api/public/media`. Add your folder to the list of path matches, e.g. `|^/media/|`:
+```caddyfile
+...
+# Matches requests for HTML documents, for static files and for Next.js files,
+# except for known API paths and paths with extensions handled by API Platform
+@pwa expression `(
+        {header.Accept}.matches("\\btext/html\\b")
+        && !{path}.matches("(?i)(?:^/docs|^/graphql|^/bundles/|^/media/|^/_profiler|^/_wdt|\\.(?:json|html$|csv$|ya?ml$|xml$))")
+...
+```
+
 ## Linking a MediaObject Resource to Another Resource
 
 We now need to update our `Book` resource, so that we can link a `MediaObject`