diff --git a/Dockerfile b/Dockerfile
index 2b74305..5f581f8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -7,14 +7,14 @@ WORKDIR /app
 # Copy package files
 COPY package*.json ./
 
-# Install dependencies
-RUN npm ci
+# Install dependencies with clean install
+RUN npm ci --prefer-offline --no-audit --force
 
 # Copy source code
 COPY . .
 
-# Build the application
-RUN npm run build
+# Clean any previous build artifacts and node_modules cache, then build
+RUN rm -rf dist node_modules/.cache && npm run build
 
 # Production stage - Use a simple server that works with Coolify
 FROM node:18-alpine AS production
diff --git a/vite.config.ts b/vite.config.ts
index fa5b6af..5852118 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -18,5 +18,33 @@ export default defineConfig(({ mode }) => ({
   build: {
     // Disable minification completely to avoid variable conflicts
     minify: false,
+    // Prevent duplicate bundling of dependencies
+    rollupOptions: {
+      output: {
+        manualChunks: (id) => {
+          // Vendor chunks for better caching and deduplication
+          if (id.includes('node_modules')) {
+            // Group DOMPurify and its dependencies separately
+            if (id.includes('dompurify') || id.includes('@xmldom')) {
+              return 'vendor-dompurify';
+            }
+            // Group React separately
+            if (id.includes('react') || id.includes('react-dom') || id.includes('react-router')) {
+              return 'vendor-react';
+            }
+            // Group video libraries
+            if (id.includes('video.js') || id.includes('hls.js') || id.includes('plyr')) {
+              return 'vendor-video';
+            }
+            // Group Supabase
+            if (id.includes('@supabase')) {
+              return 'vendor-supabase';
+            }
+            // All other node_modules
+            return 'vendor';
+          }
+        },
+      },
+    },
   },
 }));