fix lua file

filters.lua

@@ -1,4 +1,53 @@
-[FILTER]
-    Name    modify
-    Match   *
-    Add     cluster dev
+-- 
+-- https://github.com/fluent/fluent-bit/issues/1499
+-- 
+
+cjson = require("cjson")
+
+cache = {}
+
+local function get_metadata(container_id)
+    -- Read config file
+    local config_file_path = "/var/lib/docker/containers/" .. container_id .. "/config.v2.json"
+    local config_file = io.open(config_file_path, "rb")
+    if not config_file then
+        return nil
+    end
+    local config_json = config_file:read("*a")
+    config_file:close()
+
+    -- Map json config
+    local config = cjson.decode(config_json)
+
+    return {
+        id = config.ID,
+        name = config.Name:gsub("^/", ""),
+        hostname = config.Config.Hostname,
+        image = config.Config.Image,
+        image_id = config.Image,
+        labels = config.Config.Labels
+    }
+end
+
+function enrich(tag, timestamp, record)
+    -- Get container id from tag
+    local container_id = tag:match("docker%.(.+)")
+    if not container_id then
+        return 0, timestamp, record
+    end
+
+    -- Get metadata from cache or config
+    local metadata = cache[container_id]
+    if not metadata then
+        metadata = get_metadata(container_id)
+        if metadata then
+            cache[container_id] = metadata
+        end
+    end
+
+    if metadata then
+        record.docker = metadata
+    end
+
+    return 2, timestamp, record
+end