diff --git a/Dockerfile b/Dockerfile
index dd409dd..ee1e5c4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,7 +12,8 @@ FROM base AS deps
 WORKDIR /app
 COPY package.json package-lock.json* ./
 # Install deps (Legacy Peer Deps for Astro ecosystem compatibility)
-RUN npm install --legacy-peer-deps
+# Force include dev dependencies because build requiring Vite needs them
+RUN npm install --legacy-peer-deps --include=dev
 
 # 3. Builder
 FROM base AS builder