diff --git a/ci/build/Dockerfile b/ci/build/Dockerfile
index 53cef46..2a5f7c0 100644
--- a/ci/build/Dockerfile
+++ b/ci/build/Dockerfile
@@ -1,4 +1,4 @@
-FROM debian:bookworm
+FROM debian:bookworm-slim
 
 ARG NODE_VERSION
 ARG PHP_VERSION