diff --git a/frontend/Dockerfile b/frontend/Dockerfile
index bce53e2..2c1cce7 100644
--- a/frontend/Dockerfile
+++ b/frontend/Dockerfile
@@ -4,7 +4,7 @@ WORKDIR /app
 
 # install deps (needs dev deps for build)
 COPY package*.json ./
-RUN npm ci
+RUN npm ci && npm cache clean --force
 
 # app source
 COPY . .
@@ -19,6 +19,8 @@ ENV NEXT_PUBLIC_API_HOST=${NEXT_PUBLIC_API_HOST}
 ENV NEXT_PUBLIC_API_PORT=${NEXT_PUBLIC_API_PORT}
 
 RUN npm run build
+# Clean up unnecessary files to save space after build
+RUN rm -rf node_modules .next/cache
 
 # ---------- runner (standalone) ----------
 FROM docker.io/node:20-alpine AS runner