Update api.py

api.py

@@ -127,4 +127,6 @@ def document_count():
 
 
 if __name__ == '__main__':
-    app.run(debug=True, host='0.0.0.0', port=5000)
+    # Get port from environment variable, default to 5000 for local development
+    port = int(os.environ.get('PORT', 5000))
+    app.run(debug=True, host='0.0.0.0', port=port)