webproxy: T7057: Fixed 'domain-nocache' command

data/templates/squid/squid.conf.j2

@@ -30,6 +30,14 @@ acl BLOCKDOMAIN dstdomain {{ domain }}
 {%     endfor %}
 http_access deny BLOCKDOMAIN
 {% endif %}
+
+{% if domain_noncache is vyos_defined %}
+{%     for domain in domain_noncache %}
+acl NOCACHE dstdomain {{ domain }}
+{%     endfor %}
+no_cache deny NOCACHE
+{% endif %}
+
 {% if authentication is vyos_defined %}
 {%     if authentication.children is vyos_defined %}
 auth_param basic children {{ authentication.children }}

smoketest/scripts/cli/test_service_webproxy.py

@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2020-2022 VyOS maintainers and contributors
+# Copyright (C) 2020-2025 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -297,6 +297,22 @@ def test_05_basic_squidguard(self):
         # Check for running process
         self.assertTrue(process_named_running(PROCESS_NAME))
 
+    def test_06_nocache_domain_proxy(self):
+        domains_nocache = ['test1.net', 'test2.net']
+        self.cli_set(base_path + ['listen-address', listen_ip])
+        for domain in domains_nocache:
+            self.cli_set(base_path + ['domain-noncache', domain])
+        # commit changes
+        self.cli_commit()
+
+        config = read_file(PROXY_CONF)
+
+        for domain in domains_nocache:
+            self.assertIn(f'acl NOCACHE dstdomain {domain}', config)
+        self.assertIn(f'no_cache deny NOCACHE', config)
+
+        # Check for running process
+        self.assertTrue(process_named_running(PROCESS_NAME))
 
 if __name__ == '__main__':
     unittest.main(verbosity=2)