Update Dockerfile

Dockerfile

@@ -12,6 +12,8 @@ RUN apt-get update && apt-get install -y \
 COPY package.json yarn.lock* ./
 COPY requirements.txt ./
 COPY App.js App.css index.js server.py ./
+# Copy CRACO config
+COPY craco.config.js ./
 
 # Install Python dependencies
 RUN pip install --no-cache-dir -r requirements.txt