Add essential system dependencies

Dockerfile

@@ -1,8 +1,19 @@
 FROM python:3.9-slim
 
+# Install minimal system dependencies
+RUN apt-get update && apt-get install -y \
+    ffmpeg \
+    libsm6 \
+    libxext6 \
+    && rm -rf /var/lib/apt/lists/*
+
 WORKDIR /app
 
-RUN pip install --no-cache-dir gradio==4.16.0
+# Install Python packages with progress bar
+ENV PIP_PROGRESS_BAR=on
+RUN pip install --no-cache-dir \
+    gradio==4.16.0 \
+    opencv-python-headless
 
 COPY app.py .