Update Dockerfile

Dockerfile

@@ -11,12 +11,15 @@ WORKDIR /app
 # Create necessary directories first
 RUN mkdir -p /app/templates /app/instance/sessions
 
-# Copy all files
-COPY . .
+# Copy essential files first
+COPY requirements.txt app.py difydev.py init_script.py ./
+COPY templates/ templates/
 
-# Debug: Show directory structure
+# Debug: Show directory structure and verify files
 RUN echo "=== Directory Structure ===" && \
-    ls -la /app
+    ls -la /app && \
+    echo "\n=== Verifying Essential Files ===" && \
+    ls -la /app/init_script.py /app/app.py /app/difydev.py
 
 # Install Python dependencies
 RUN pip install --no-cache-dir -r requirements.txt