diff --git a/Dockerfile b/Dockerfile
index c39e22e3ef..0c23bd3404 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -15,6 +15,7 @@ RUN npx grunt
 FROM composer:2 AS composer
 WORKDIR /build
 COPY composer.json composer.lock ./
+COPY dev/ ./dev/
 RUN composer install \
     --no-dev \
     --no-interaction \