diff --git a/Dockerfile b/Dockerfile
index 1a701d00..f82c17d3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:11.15.0
+FROM mafgwo/wkhtmltopdf-nodejs:11.15.0
 
 RUN mkdir -p /opt/stackedit
 WORKDIR /opt/stackedit
diff --git a/package.json b/package.json
index 0433b537..99e53d89 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "stackedit",
-  "version": "5.15.5",
+  "version": "5.15.6",
   "description": "Free, open-source, full-featured Markdown editor",
   "author": "Benoit Schweblin",
   "license": "Apache-2.0",
diff --git a/src/services/providers/helpers/giteeHelper.js b/src/services/providers/helpers/giteeHelper.js
index 8807a367..c9de2986 100644
--- a/src/services/providers/helpers/giteeHelper.js
+++ b/src/services/providers/helpers/giteeHelper.js
@@ -68,7 +68,7 @@ export default {
   /**
    * https://developer.gitee.com/apps/building-oauth-apps/authorization-options-for-oauth-apps/
    */
-  async startOauth2(lastRefreshToken, silent = false) {
+  async startOauth2(lastToken, silent = false, isMain) {
     const clientId = store.getters['data/serverConf'].giteeClientId;
     let tokenBody;
     if (!silent) {
@@ -99,7 +99,7 @@ export default {
         url: 'https://gitee.com/oauth/token',
         params: {
           grant_type: 'refresh_token',
-          refresh_token: lastRefreshToken,
+          refresh_token: lastToken.refreshToken,
         },
       })).body;
     }
@@ -112,23 +112,32 @@ export default {
         access_token: accessToken,
       },
     })).body;
+    if (user.avatar_url && user.avatar_url.endsWith('.png')) {
+      user.avatar_url = `${user.avatar_url}!avatar60`;
+    }
     userSvc.addUserInfo({
       id: `${subPrefix}:${user.login}`,
       name: user.login,
       imageUrl: user.avatar_url || '',
     });
 
+    // 获取同一个用户的登录token
+    const existingToken = store.getters['data/giteeTokensBySub'][user.login];
+
     // Build token object including sub 在token失效后刷新token 如果刷新失败则触发重新授权
     const token = {
       accessToken,
+      // 主文档空间的登录 标识登录
+      isLogin: !!isMain || (existingToken && !!existingToken.isLogin),
       refreshToken: tokenBody.refresh_token,
       expiresOn: Date.now() + (tokenBody.expires_in * 1000),
       name: user.login,
       sub: `${user.login}`,
     };
-
-    // 检查 stackedit-app-data 仓库是否已经存在 如果不存在则创建该仓库
-    await this.checkAndCreateRepo(token);
+    if (isMain) {
+      // 检查 stackedit-app-data 仓库是否已经存在 如果不存在则创建该仓库
+      await this.checkAndCreateRepo(token);
+    }
     // Add token to gitee tokens
     store.dispatch('data/addGiteeToken', token);
     return token;
@@ -153,7 +162,7 @@ export default {
     // existing token is about to expire.
     // Try to get a new token in background
     try {
-      return await this.startOauth2(lastToken.refreshToken, true);
+      return await this.startOauth2(lastToken, true);
     } catch (err) {
       // If it fails try to popup a window
       if (store.state.offline) {
@@ -167,7 +176,7 @@ export default {
     }
   },
   signin() {
-    return this.startOauth2();
+    return this.startOauth2(null, false, true);
   },
   async addAccount() {
     const token = await this.startOauth2();
diff --git a/src/store/workspace.js b/src/store/workspace.js
index 84f5447d..a72f6d39 100644
--- a/src/store/workspace.js
+++ b/src/store/workspace.js
@@ -57,7 +57,12 @@ export default {
     lastSyncActivityKey: (state, { currentWorkspace }) => `${currentWorkspace.id}/lastSyncActivity`,
     lastFocusKey: (state, { currentWorkspace }) => `${currentWorkspace.id}/lastWindowFocus`,
     mainWorkspaceToken: (state, getters, rootState, rootGetters) =>
-      utils.someResult(Object.values(rootGetters['data/giteeTokensBySub']), token => token),
+      utils.someResult(Object.values(rootGetters['data/giteeTokensBySub']), (token) => {
+        if (token.isLogin) {
+          return token;
+        }
+        return null;
+      }),
     syncToken: (state, { currentWorkspace, mainWorkspaceToken }, rootState, rootGetters) => {
       switch (currentWorkspace.providerId) {
         case 'googleDriveWorkspace':