diff --git a/.dockerignore b/.dockerignore
index 5e7f187..ba5225d 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -17,3 +17,6 @@ devbox.lock
 .htmltest.yml
 .htmlvalidate.json
 .markdownlint.json
+
+# Ensure package-lock.json is included for npm ci
+!package-lock.json