docs: 添加部署时指定时区的方法说明 (#337)

Author: eryajf

docs/guide/install/docker.md

@@ -72,13 +72,14 @@ services:
             - UMASK=022
         restart: unless-stopped
 ```
+After the service runs, the default time zone for the container is UTC time zone. If you want to specify the time zone for the container to run, you can achieve this by passing this variable:`-e "TZ=Asia/Shanghai"`。
 
 ### **Offline download with aria2**
 
 If you want to use aria2 to offline download, we recommend you to use this [image](https://hub.docker.com/r/xhofe/alist-aria2), which carries a pre-installed aria2.
 
 ### **Dev version**
-Just for amd64/arm64. Not recommended, this may can't work properly. 
+Just for amd64/arm64. Not recommended, this may can't work properly.
 
 #### **docker-cli**
 

docs/zh/guide/install/docker.md

@@ -65,6 +65,8 @@ services:
         restart: unless-stopped
 ```
 
+服务运行之后，容器默认的时区为UTC时区，如果你想指定容器运行的时区，则可以通过传递此变量来实现：`-e "TZ=Asia/Shanghai"`。
+
 ### **使用 aria2 离线下载**
 
 如果你想使用aria2离线下载，我们推荐你使用这个[image](https://hub.docker.com/r/xhofe/alist-aria2)，它预装了aria2。