diff --git a/deploy.php b/deploy.php
index c6ea574..0b30dd4 100644
--- a/deploy.php
+++ b/deploy.php
@@ -92,8 +92,11 @@ task('build', function () {
         : 'ddev exec bash -c ' . escapeshellarg($command));
     runLocally('rm -rf {{build_dir}} && mkdir -p {{build_dir}}');
     runLocally('git archive HEAD | tar -x -C {{build_dir}}');
-    $exec('cd var/deploy-build && composer install --no-dev --prefer-dist --no-progress --no-interaction --optimize-autoloader');
+    // Assets first: Composer only publishes an extension's Resources/Public as public/_assets/<hash>
+    // if the directory exists when it runs, and the theme's is created by the build
     $exec('cd var/deploy-build && npm ci --no-audit --no-fund && npm run build');
+    $exec('cd var/deploy-build && composer install --no-dev --prefer-dist --no-progress --no-interaction --optimize-autoloader');
+    runLocally('test -L {{build_dir}}/public/_assets/' . md5('/vendor/ep/ep-theme/') . ' && test -f {{build_dir}}/packages/ep_theme/Resources/Public/entrypoints.json');
 })->once();
 
 desc('Read-only checks of the host before the first deploy (see .ddev/plans/TYPO3-13-GO-LIVE.md)');