diff --git a/.github/workflows/docker-publish.yml b/.github/workflows/docker-publish.yml
index a99d631..77b4832 100644
--- a/.github/workflows/docker-publish.yml
+++ b/.github/workflows/docker-publish.yml
@@ -15,7 +15,7 @@ on:
 
 env:
   # TODO: Change variable to your image's name.
-  IMAGE_NAME: Caution
+  IMAGE_NAME: caution
 
 jobs:
   # Run tests.
diff --git a/README.md b/README.md
index 0a54eba..d3105ad 100644
--- a/README.md
+++ b/README.md
@@ -1,18 +1,19 @@
 # bilibiliupload
 ![](https://img.shields.io/badge/python-v3.7%2B-blue)
+![GitHub](https://img.shields.io/github/license/ForgQi/bilibiliupload)
 
 支持自动录制各大直播平台，上传直播录像到bilibili。  
 
 * 自动选择上传线路，保证国内外vps上传质量
 * 可分别控制下载与上传并发量
-* 支持通过API上传与selenium操作浏览器上传两种方式
+* 支持通过API上传~~与selenium操作浏览器上传两种方式~~
 
 相关设置在config.yaml文件中，如直播间地址，b站账号密码
 
 ## 使用准备
-修改文件名**config(demo).yaml** → **config.yaml**\
-下载 __FFmpeg__\
-依赖安装`pip3 install -r requirements.txt`
+1. 修改文件名**config(demo).yaml** → **config.yaml**
+2. 下载 __FFmpeg__
+3. 依赖安装`pip3 install -r requirements.txt`
 ## Linux系统下使用方法：
 >
 >     启动： ./Bilibili.py start
@@ -96,4 +97,5 @@ def transcoding(data):
 ## Credits
 * Thanks `ykdl, youtube-dl, streamlink` provides downloader.
 
-类似项目`ZhangMingZhao1/StreamerHelper`
+类似项目:\
+![ZhangMingZhao1/StreamerHelper](https://avatars2.githubusercontent.com/u/29058747?s=50&u=5f8c3acaa9d09f4396f00256c0ce6ef01452e92f&v=4)
diff --git a/engine/__init__.py b/engine/__init__.py
index 54bc023..4c6c58a 100644
--- a/engine/__init__.py
+++ b/engine/__init__.py
@@ -30,7 +30,7 @@ async def main():
     # 初始化事件管理器
     event_manager.context = {**config, 'urls': urls, 'url_status': url_status,
                              'checker': checker, 'inverted_index': inverted_index, 'streamer_url': streamer_url}
-    import engine.handler
+    from engine.handler import CHECK_UPLOAD, CHECK
     event_manager.start()
 
     async def check_timer():
@@ -46,11 +46,4 @@ async def main():
     await asyncio.gather(detector.astart(), timer.astart(), return_exceptions=True)
 
 
-CHECK = 'check'
-CHECK_UPLOAD = 'check_upload'
-TO_MODIFY = 'to_modify'
-DOWNLOAD = 'download'
-BE_MODIFIED = 'be_modified'
-UPLOAD = 'upload'
-__all__ = ['downloader', 'uploader', 'plugins', 'main',
-           'CHECK', 'BE_MODIFIED', 'DOWNLOAD', 'TO_MODIFY', 'UPLOAD', 'CHECK_UPLOAD']
+__all__ = ['downloader', 'uploader', 'plugins', 'main']
diff --git a/engine/handler.py b/engine/handler.py
index cdfbe12..1405e62 100644
--- a/engine/handler.py
+++ b/engine/handler.py
@@ -1,11 +1,17 @@
 import common
 from common import logger
 from common.event import Event, event_manager
-from engine import *
 from engine.downloader import download, check_url
 from engine.plugins.upload import UploadBase
 from engine.uploader import upload
 
+CHECK = 'check'
+CHECK_UPLOAD = 'check_upload'
+TO_MODIFY = 'to_modify'
+DOWNLOAD = 'download'
+BE_MODIFIED = 'be_modified'
+UPLOAD = 'upload'
+
 
 @event_manager.register(DOWNLOAD, block=True)
 def process(name, url):
@@ -55,10 +61,6 @@ class KernelFunc:
         self.url_status[url] = 1
         return Event(DOWNLOAD, args=(name, url))
 
-    def free(self, list_url):
-        status_num = list(map(lambda x: self.url_status.get(x), list_url))
-        return not (1 in status_num or 2 in status_num)
-
     @event_manager.register(CHECK_UPLOAD)
     def free_upload(self):
         for title, urls in self.streamer_url.items():
@@ -71,3 +73,7 @@ class KernelFunc:
             # 更新字典
             # url_status = {**url_status, **{url: 0}}
             self.url_status.update({url: status})
+
+    def free(self, list_url):
+        status_num = list(map(lambda x: self.url_status.get(x), list_url))
+        return not (1 in status_num or 2 in status_num)