Fix permissions and create necessary directories in Dockerfile

Dockerfile

@@ -27,6 +27,11 @@ RUN wget -q "https://chromedriver.storage.googleapis.com/114.0.5735.90/chromedri
 
 # Create a non-root user
 RUN useradd -m -u 1000 user
+
+# Create necessary directories and set permissions
+RUN mkdir -p /app/static/screenshots /app/static/uploads /app/static/masks /app/templates \
+    && chown -R user:user /app
+
 USER user
 
 # Install Python dependencies