feat(apisix): add Cloudron package

- Implements Apache APISIX packaging for Cloudron platform.
- Includes Dockerfile, CloudronManifest.json, and start.sh.
- Configured to use Cloudron's etcd addon.

🤖 Generated with Gemini CLI
Co-Authored-By: Gemini <noreply@google.com>

CloudronPackages/APISIX/apisix-source/t/discovery/dns/mix.t

@@ -0,0 +1,131 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+BEGIN {
+    $ENV{CUSTOM_DNS_SERVER} = "127.0.0.1:1053";
+}
+
+use t::APISIX 'no_plan';
+
+repeat_each(1);
+no_root_location();
+no_shuffle();
+
+add_block_preprocessor(sub {
+    my ($block) = @_;
+
+    if (!$block->yaml_config) {
+        my $yaml_config = <<_EOC_;
+apisix:
+    node_listen: 1984
+    enable_admin: false
+deployment:
+    role: data_plane
+    role_data_plane:
+        config_provider: yaml
+discovery:                        # service discovery center
+    dns:
+        servers:
+            - "127.0.0.1:1053"
+_EOC_
+
+        $block->set_value("yaml_config", $yaml_config);
+    }
+
+    if ($block->apisix_yaml) {
+        my $upstream = <<_EOC_;
+routes:
+  -
+    id: 1
+    uris:
+        - /hello
+    upstream_id: 1
+  -
+    id: 2
+    uris:
+        - /hello_chunked
+    upstream_id: 2
+#END
+_EOC_
+
+        $block->set_value("apisix_yaml", $block->apisix_yaml . $upstream);
+    }
+
+    if (!$block->request) {
+        $block->set_value("request", "GET /hello");
+    }
+});
+
+run_tests();
+
+__DATA__
+
+=== TEST 1: mix cache between discovery & global resolver
+--- log_level: debug
+--- apisix_yaml
+upstreams:
+    -
+        id: 1
+        nodes:
+            ttl.1s.test.local:1980: 1
+        type: roundrobin
+    -
+        id: 2
+        service_name: "ttl.1s.test.local:1980"
+        discovery_type: dns
+        type: roundrobin
+--- config
+    location /t {
+        content_by_lua_block {
+            local http = require "resty.http"
+            local uri1 = "http://127.0.0.1:" .. ngx.var.server_port .. "/hello"
+            local uri2 = "http://127.0.0.1:" .. ngx.var.server_port .. "/hello_chunked"
+            for i = 1, 2 do
+                for j = 1, 3 do
+                    local httpc = http.new()
+                    local res, err
+                    if j % 2 ~= 0 then
+                        res, err = httpc:request_uri(uri1, {method = "GET"})
+                    else
+                        res, err = httpc:request_uri(uri2, {method = "GET"})
+                    end
+
+                    if not res or res.body ~= "hello world\n" then
+                        ngx.say(err)
+                        return
+                    end
+                end
+
+                -- It is expected to have 5 DNS queries
+                -- the first turn: one for global resolver & two for discovery (SRV, then A)
+                -- the second turn: each one for both global resolver & discovery
+                if i < 2 then
+                    ngx.sleep(1.1)
+                end
+            end
+        }
+    }
+--- request
+GET /t
+--- grep_error_log eval
+qr/connect to 127.0.0.1:1053/
+--- grep_error_log_out
+connect to 127.0.0.1:1053
+connect to 127.0.0.1:1053
+connect to 127.0.0.1:1053
+connect to 127.0.0.1:1053
+connect to 127.0.0.1:1053
+connect to 127.0.0.1:1053