Update Dockerfile

Dockerfile

@@ -1,6 +1,6 @@
 FROM python:3.10-slim
 
-# Install system dependencies
+# Install system packages required for pygame + headless display
 RUN apt-get update && apt-get install -y \
     xvfb \
     python3-tk \
@@ -10,15 +10,18 @@ RUN apt-get update && apt-get install -y \
     libxext6 \
     && rm -rf /var/lib/apt/lists/*
 
-# Set up working directory
+# Set working directory
 WORKDIR /app
 
 # Install Python dependencies
 COPY requirements.txt .
 RUN pip install -r requirements.txt
 
-# Copy app code
+# Copy source code
 COPY app.py .
 
-# Run with Xvfb to support pygame
-CMD xvfb-run -a python app.py
+# Expose Hugging Face expected port
+EXPOSE 7860
+
+# Launch Gradio + pygame app using virtual display
+CMD xvfb-run -a python app.py.