fix: provide correct temporary directory outside of `vendor/`

Dockerfile

@@ -43,6 +43,7 @@ COPY . /app
 WORKDIR /app
 
 RUN mkdir -p /app/bootstrap/cache \
+    /app/storage/media-library/temp \
     /app/storage/framework/cache \
     /app/storage/framework/views \
     /app/storage/framework/sessions \
@@ -84,8 +85,6 @@ RUN apk add --no-cache xz
 # bring PHP app with vendor
 COPY --from=phpdeps /app /app
 
-# ensure required runtime dirs exist (empty is fine)
-RUN mkdir -p storage/framework/cache storage/framework/views storage/framework/sessions bootstrap/cache
 # create artifact (use tar + xz so we don't depend on GNU tar -J)
 RUN mkdir -p /out \
  && tar -C /app -cf /out/app.tar \