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/apisix/discovery/init.lua

@@ -0,0 +1,43 @@
+--
+-- 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.
+--
+
+local log          = require("apisix.core.log")
+local local_conf   = require("apisix.core.config_local").local_conf()
+local pairs        = pairs
+
+local discovery_type = local_conf.discovery
+local discovery = {}
+
+if discovery_type then
+    for discovery_name, _ in pairs(discovery_type) do
+        log.info("use discovery: ", discovery_name)
+        discovery[discovery_name] = require("apisix.discovery." .. discovery_name)
+    end
+end
+
+function discovery.init_worker()
+    if discovery_type then
+        for discovery_name, _ in pairs(discovery_type) do
+            discovery[discovery_name].init_worker()
+        end
+    end
+end
+
+return {
+    version = 0.1,
+    discovery = discovery
+}