fix: 修复镜像缺少文件问题

Dockerfile

@@ -11,6 +11,7 @@ WORKDIR /app
 COPY --from=builder /app/.venv /app/.venv
 COPY --from=builder /app/ffmpeg /app/ffmpeg
 COPY xiaomusic/ ./xiaomusic/
+COPY plugins/ ./plugins/
 COPY xiaomusic.py .
 ENV XDG_CONFIG_HOME=/config
 ENV XIAOMUSIC_HOSTNAME=192.168.2.5

xiaomusic/plugin.py

@@ -1,23 +1,15 @@
 import importlib
 import inspect
-import os
 import pkgutil
-import sys
 
 
 class PluginManager:
     def __init__(self, xiaomusic, plugin_dir="plugins"):
         self.xiaomusic = xiaomusic
         self.log = xiaomusic.log
         self._funcs = {}
-        self._add_plugin_dir_to_path(plugin_dir)
         self._load_plugins(plugin_dir)
 
-    def _add_plugin_dir_to_path(self, plugin_dir):
-        plugin_dir_path = os.path.join(os.path.dirname(__file__), plugin_dir)
-        if plugin_dir_path not in sys.path:
-            sys.path.append(plugin_dir_path)
-
     def _load_plugins(self, plugin_dir):
         # 假设 plugins 已经在搜索路径上
         package_name = plugin_dir