fix: use vite build directly instead of npm run build

- npm run build includes esbuild server compilation
- Docker only needs frontend vite build
- Prevents server compilation conflicts in builder stage

Author: drixindustries

Dockerfile

@@ -12,8 +12,8 @@ COPY shared/ ./shared/
 COPY vite.config.ts ./
 COPY tsconfig*.json ./
 
-# Build frontend (outputs to /app/dist/public)
-RUN npm run build
+# Build ONLY frontend (not server)
+RUN npx vite build --config vite.config.ts
 
 # Production stage
 FROM node:20-alpine
@@ -28,7 +28,7 @@ RUN npm install --production
 COPY shared/ ./shared/
 COPY server/ ./
 
-# Copy frontend build from builder stage (correct path: /app/dist/public)
+# Copy frontend build from builder stage
 COPY --from=frontend-builder /app/dist/public/ ./dist/public/
 
 # Environment