Replace HTTP server implementation with Flask API for DNS updates

app.py

@@ -0,0 +1,12 @@
+#!/usr/bin/env python3
+
+from flask import Flask
+
+app = Flask('dns-updater')
+
+@app.route('/api/dnsupdate')
+def api_root():
+    return "Welcome to the DNS Updater API"
+
+if __name__ == '__main__':
+    app.run(host='0.0.0.0', port=8080)

dns-updater.py

@@ -1,29 +0,0 @@
-#!/usr/bin/env python3
-
-import http.server
-import argparse
-
-class DNSUpdateHandler(http.server.BaseHTTPRequestHandler):
-    def do_GET(self):
-        self.send_response(200)
-        self.send_header('Content-type', 'text/plain')
-        self.end_headers()
-        self.wfile.write(b'DNS Update Service is running.\n')
-
-def run(server_class=http.server.HTTPServer, handler_class=DNSUpdateHandler, address='127.0.0.1', port=8080):
-    server_address = (address, port)
-    httpd = server_class(server_address, handler_class)
-    print(f'Starting DNS Update Service on {address}:{port}...')
-    httpd.serve_forever()
-
-if __name__ == "__main__":
-    parser = argparse.ArgumentParser(description='Run the DNS Update Service.')
-    parser.add_argument('--port', type=int, default=8080, help='Port to run the server on')
-    parser.add_argument('--address', type=str, default='127.0.0.1', help='IP address to listen on (not used in this simple example)')
-    args = parser.parse_args()
-
-    try:
-        run(address=args.address, port=args.port)
-    except KeyboardInterrupt:
-        print("\nShutting down DNS Update Service.")
-