diff --git a/Dockerfile b/Dockerfile
index b7d27f1..db2d872 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,6 +6,11 @@
 # ---- Stage 1: Build Angular Frontend ----
 FROM node:24-slim AS frontend-build
 
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    default-jre-headless \
+    ca-certificates \
+ && rm -rf /var/lib/apt/lists/*
+
 WORKDIR /app/eeg_frontend
 
 COPY eeg_frontend/package.json eeg_frontend/package-lock.json* ./