diff --git a/Dockerfile b/Dockerfile
index 37163ad..e79e464 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,6 +10,7 @@ ENV DOMAIN=0.0.0.0:80
 ENV ARIA2_USER=user
 ENV ARIA2_PWD=password
 ENV ARIA2_SSL=false
+ENV ARIA2_OUTSIDE_PORT=80
 ENV PUID=1000
 ENV PGID=1000
 
@@ -41,8 +42,7 @@ RUN mkdir /usr/local/www/aria2/Download \
   && wget -N --no-check-certificate https://github.com/mayswind/AriaNg/releases/download/${version}/AriaNg-${version}.zip \
   && unzip AriaNg-${version}.zip \
   && rm -rf AriaNg-${version}.zip \
-  && chmod -R 755 /usr/local/www/aria2 \
-  && sed -i 's/6800/80/g' /usr/local/www/aria2/js/aria-ng*.js
+  && chmod -R 755 /usr/local/www/aria2
 
 # folder for storing ssl keys
 VOLUME /app/conf/key
diff --git a/README.CN.md b/README.CN.md
index 2fef879..8c0e158 100644
--- a/README.CN.md
+++ b/README.CN.md
@@ -70,6 +70,7 @@ File Browser
   -e ARIA2_SSL=false \
   -e ARIA2_USER=user \
   -e ARIA2_PWD=pwd \
+  -e ARIA2_OUTSIDE_PORT=443 \
   -v /yourdata:/data \
   -v /app/a.db:/app/filebrowser.db \
   -v /yoursslkeys/:/app/conf/key \
@@ -100,6 +101,7 @@ services:
   * ENABLE_AUTH 启用 Basic auth(网页简单认证) 用户认证
   * ARIA2_USER Basic Auth 用户认证用户名
   * ARIA2_PWD Basic Auth 密码
+  * ARIA2_OUTSIDE_PORT 从外部可以访问到的ARIA2端口，默认为http的`80`
   * PUID 需要绑定主机的Linux用户ID，可以通过`cat /etc/passwd` 查看用户列表， 默认UID 是`1000`
   * PGID 需要绑定的主机的Linux 用户组ID，默认GID 是`1000`
   * RPC_SECRET Aria2 RPC 加密 token
@@ -135,6 +137,6 @@ docker build -t aria2-ui .
   请参考 <https://github.com/wahyd4/aria2-ariang-x-docker-compose>
 
 ## 常见问题
-  1. 当你以非其他`80` 端口或以启用了HTTPS`443`端口运行程序时，会出现`Aria2 状态 未连接`的错误，这是因为在最新版本里面，我们去掉aria2的独立6800端口，转而使用和网站同一个端口。因为你需要渠道 `AriaNg设置` -> 页面顶端的 `RPC`页面，将你的Aria2 RPC 地址中的端口从`80`改成你使用的正确端口。因为 AriaNg 仅仅将设置保存在浏览器中，因为当你使用不同的浏览器，或者将浏览器清除缓存后，你都需要重新设置一次。
+  1. 当你以非其他`80` 端口或以启用了HTTPS`443`端口运行程序时，会出现`Aria2 状态 未连接`的错误，这是因为在最新版本里面，我们去掉aria2的独立6800端口，转而使用和网站同一个端口。你可以设置`ARIA2_OUTSIDE_PORT`后重建你的容器。
   2. 下载的BT或者磁力完全没有速度怎么办？ 建议先下载一个热门的BT种子文件，而不是磁力链接。这样可以帮助缓存DHT文件，渐渐地，速度就会起来了。比如试试下载树莓派操作系统的BT种子？[前往下载](https://www.raspberrypi.org/downloads/raspbian/)
   3. 如果你遇到了和 `setcap` 相关的错误，很大程度说明你说运行的Linux不支持使用非`root`用户来运行本Docker 镜像，因此请显式地设置环境变量`PUID`  `PGID` 为 `0` ，也就是使用`root` 来运行
diff --git a/README.md b/README.md
index 489c14f..1f8c8da 100644
--- a/README.md
+++ b/README.md
@@ -76,6 +76,7 @@ File Browser
   -e ARIA2_SSL=false \
   -e ARIA2_USER=user \
   -e ARIA2_PWD=pwd \
+  -e ARIA2_OUTSIDE_PORT=443 \
   -v /yourdata:/data \
   -v /app/a.db:/app/filebrowser.db \
   -v /yoursslkeys/:/app/conf/key \
@@ -106,6 +107,7 @@ Then just run `docker-compose up -d`, that's it!
   * ENABLE_AUTH whether to enable Basic auth
   * ARIA2_USER Basic Auth username
   * ARIA2_PWD Basic Auth password
+  * ARIA2_OUTSIDE_PORT The Aria2 port which accessible from outside
   * PUID Bind Linux UID into container which means you can use non `root` user to manage downloaded files, default UID is `1000`
   * PGID Bind Linux GID into container, default GID is 1000
   * RPC_SECRET The Aria2 RPC secret token
@@ -140,6 +142,6 @@ docker build -t aria2-ui .
   Please refer <https://github.com/wahyd4/aria2-ariang-x-docker-compose>
 
 ## FAQ
-  1. When you running the docker image with non `80` port or you have HTTPS enabled, you will meet the error says `Aria2 Status Disconnected`, then you will need to go to `AriaNg Settings` -> RPC (at the top of the page) to modify the port value in `Aria2 RPC Address` field. Due to AriaNg store all configurations in local browser, so you need to do this per browser.
+  1. When you running the docker image with non `80` port or you have HTTPS enabled, you will meet the error says `Aria2 Status Disconnected`, then you will need to set `ARIA2_OUTSIDE_PORT` and recreate your container.
   2. If there is no speed at all when you downloading a BitTorrent file, please try to use a popular torrent file first to help the application to cache `DHT` file. Then the speed should get fast and fast, as well as downloading other links.
   3. If you see any errors related to `setcap` which probably means the Linux you are running doesn't support running this application with `non-root` user. So please specify the `PUID` and `PGID` to `0` explicitly to use `root` user to run it.
diff --git a/aria2c.sh b/aria2c.sh
index e76d6f6..f9a9ae2 100755
--- a/aria2c.sh
+++ b/aria2c.sh
@@ -1,5 +1,7 @@
 #! /bin/bash -eu
 
+sed -i 's/6800/'"${ARIA2_OUTSIDE_PORT}"'/g' /usr/local/www/aria2/js/aria-ng*.js
+
 if [ "$ARIA2_SSL" = "true" ]; then
 echo "Start aria2 with secure config"
 
diff --git a/arm32.Dockerfile b/arm32.Dockerfile
index 85508a9..78d4ed5 100644
--- a/arm32.Dockerfile
+++ b/arm32.Dockerfile
@@ -10,6 +10,7 @@ ENV DOMAIN=0.0.0.0:80
 ENV ARIA2_USER=user
 ENV ARIA2_PWD=password
 ENV ARIA2_SSL=false
+ENV ARIA2_OUTSIDE_PORT=80
 ENV PUID=1000
 ENV PGID=1000
 
@@ -42,8 +43,7 @@ RUN mkdir /usr/local/www/aria2/Download \
   && wget -N --no-check-certificate https://github.com/mayswind/AriaNg/releases/download/${version}/AriaNg-${version}.zip \
   && unzip AriaNg-${version}.zip \
   && rm -rf AriaNg-${version}.zip \
-  && chmod -R 755 /usr/local/www/aria2 \
-  && sed -i 's/6800/80/g' /usr/local/www/aria2/js/aria-ng*.js
+  && chmod -R 755 /usr/local/www/aria2
 
 #The folder to store ssl keys
 VOLUME /app/conf/key
diff --git a/arm64.Dockerfile b/arm64.Dockerfile
index 86af373..22c3719 100644
--- a/arm64.Dockerfile
+++ b/arm64.Dockerfile
@@ -10,6 +10,7 @@ ENV DOMAIN=0.0.0.0:80
 ENV ARIA2_USER=user
 ENV ARIA2_PWD=password
 ENV ARIA2_SSL=false
+ENV ARIA2_OUTSIDE_PORT=80
 ENV PUID=1000
 ENV PGID=1000
 
@@ -41,8 +42,7 @@ RUN mkdir /usr/local/www/aria2/Download \
   && wget -N --no-check-certificate https://github.com/mayswind/AriaNg/releases/download/${version}/AriaNg-${version}.zip \
   && unzip AriaNg-${version}.zip \
   && rm -rf AriaNg-${version}.zip \
-  && chmod -R 755 /usr/local/www/aria2 \
-  && sed -i 's/6800/80/g' /usr/local/www/aria2/js/aria-ng*.js
+  && chmod -R 755 /usr/local/www/aria2
 
 #The folder to store ssl keys
 VOLUME /app/conf/key