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/cli/env.lua

@@ -0,0 +1,115 @@
+--
+-- 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 require = require
+local util = require("apisix.cli.util")
+
+local pcall = pcall
+local error = error
+local exit = os.exit
+local stderr = io.stderr
+local str_find = string.find
+local arg = arg
+local package = package
+local tonumber = tonumber
+
+return function (apisix_home, pkg_cpath_org, pkg_path_org)
+    -- ulimit setting should be checked when APISIX starts
+    local res, err = util.execute_cmd("ulimit -n")
+    if not res then
+        error("failed to exec ulimit cmd \'ulimit -n \', err: " .. err)
+    end
+    local trimed_res = util.trim(res)
+    local ulimit = trimed_res == "unlimited" and trimed_res or tonumber(trimed_res)
+    if not ulimit then
+        error("failed to fetch current maximum number of open file descriptors")
+    end
+
+    -- only for developer, use current folder as working space
+    local is_root_path = false
+    local script_path = arg[0]
+    if script_path:sub(1, 2) == './' then
+        apisix_home = util.trim(util.execute_cmd("pwd"))
+        if not apisix_home then
+            error("failed to fetch current path")
+        end
+
+        -- determine whether the current path is under the "/root" folder.
+        -- "/root/" is the root folder flag.
+        if str_find(apisix_home .. "/", '/root/', nil, true) == 1 then
+            is_root_path = true
+        end
+
+        local pkg_cpath = apisix_home .. "/deps/lib64/lua/5.1/?.so;"
+                          .. apisix_home .. "/deps/lib/lua/5.1/?.so;"
+
+        local pkg_path = apisix_home .. "/?/init.lua;"
+                         .. apisix_home .. "/deps/share/lua/5.1/?/init.lua;"
+                         .. apisix_home .. "/deps/share/lua/5.1/?.lua;;"
+
+        package.cpath = pkg_cpath .. package.cpath
+        package.path  = pkg_path .. package.path
+    end
+
+    do
+        -- skip luajit environment
+        local ok = pcall(require, "table.new")
+        if not ok then
+            local ok, json = pcall(require, "cjson")
+            if ok and json then
+                stderr:write("please remove the cjson library in Lua, it may "
+                            .. "conflict with the cjson library in openresty. "
+                            .. "\n luarocks remove lua-cjson\n")
+                exit(1)
+            end
+        end
+    end
+
+    -- pre-transform openresty path
+    res, err = util.execute_cmd("command -v openresty")
+    if not res then
+        error("failed to exec cmd \'command -v openresty\', err: " .. err)
+    end
+    local openresty_path_abs = util.trim(res)
+
+    local openresty_args = openresty_path_abs .. [[ -p ]] .. apisix_home .. [[ -c ]]
+                           .. apisix_home .. [[/conf/nginx.conf]]
+
+    local or_info, err = util.execute_cmd("openresty -V 2>&1")
+    if not or_info then
+        error("failed to exec cmd \'openresty -V 2>&1\', err: " .. err)
+    end
+
+    local use_apisix_base = true
+    if not or_info:find("apisix-nginx-module", 1, true) then
+        use_apisix_base = false
+    end
+
+    local min_etcd_version = "3.4.0"
+
+    return {
+        apisix_home = apisix_home,
+        is_root_path = is_root_path,
+        openresty_args = openresty_args,
+        openresty_info = or_info,
+        use_apisix_base = use_apisix_base,
+        pkg_cpath_org = pkg_cpath_org,
+        pkg_path_org = pkg_path_org,
+        min_etcd_version = min_etcd_version,
+        ulimit = ulimit,
+    }
+end