adding testing

app.py

@@ -1,10 +1,13 @@
-from flask import Flask
+"""A simple Flask web application."""
+
+from flask import Flask, jsonify
 
 app = Flask(__name__)
 
-@app.route('/')
-def hello_world():
-    return 'Hello, Worlddddddddddd!!!'
+@app.route("/", methods=["GET"])
+def home():
+    """Return a simple JSON greeting message."""
+    return jsonify({"message": "Hello, Flask!"})
 
-if __name__ == '__main__':
-    app.run(debug=True)
+if __name__ == "__main__":
+    app.run(host="0.0.0.0", port=5000)