Update Docker port

Dockerfile

@@ -16,12 +16,13 @@ RUN pip install --no-cache-dir -r requirements.txt
 # Copy application code
 COPY app/ ./app/
 
-# Expose port
-EXPOSE 8000
+# Expose port expected by Hugging Face
+EXPOSE 7860
 
 # Set environment variables
-ENV PYTHONUNBUFFERED=1
+ENV PYTHONUNBUFFERED=1 \
+    PORT=7860
 
-# Run the application
-CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]
+# Run the application on the expected port
+CMD ["sh", "-c", "uvicorn app.main:app --host 0.0.0.0 --port ${PORT}"]