diff --git a/.gitignore b/.gitignore
index 67554cf..f120e44 100644
--- a/.gitignore
+++ b/.gitignore
@@ -140,3 +140,4 @@ dmypy.json
 /*.sqlite
 /.idea/dataSources.xml
 /.idea/sqldialects.xml
+/.idea/.gitignore
diff --git a/.idea/.gitignore b/.idea/.gitignore
deleted file mode 100644
index 73f69e0..0000000
--- a/.idea/.gitignore
+++ /dev/null
@@ -1,8 +0,0 @@
-# Default ignored files
-/shelf/
-/workspace.xml
-# Datasource local storage ignored files
-/dataSources/
-/dataSources.local.xml
-# Editor-based HTTP Client requests
-/httpRequests/
diff --git a/README.md b/README.md
index 50940eb..d0e6e0d 100644
--- a/README.md
+++ b/README.md
@@ -1,39 +1,97 @@
-# ytdl-bot
+# ytdlbot
+
+YouTube Download🚀
+
 Download videos from YouTube and other platforms through a Telegram Bot
 
 [![Deploy](https://www.herokucdn.com/deploy/button.svg)](https://heroku.com/deploy)
 
-# Usage:
+# Usage
 
 [https://t.me/benny_ytdlbot](https://t.me/benny_ytdlbot)
 
-Send link from YouTube directly to the bot. 
-Any platform [supported by youtube-dl](https://ytdl-org.github.io/youtube-dl/supportedsites.html) will also work.
+Send link directly to the bot. Any
+platform [supported by youtube-dl](https://ytdl-org.github.io/youtube-dl/supportedsites.html) will also work.
+
+## Limitation of my bot
+
+Because I have limited resources, hundreds of Gigabytes doesn't sound like a sustainable solution.
+
+**In that case, I added one limitation: 5GiB per 24 hours for each user. Might change in future**
+
+You can choose to become 'VIP' if you really need large traffic. And also, you could always deploy your own bot.
+
+# Features
 
-# Feature
 ![](assets/1.jpeg)
 
-1. fast download and upload. Many thanks to [FastTelethon](https://gist.github.com/painor/7e74de80ae0c819d3e9abcf9989a8dd6) and 
-[JasonKhew96](https://github.com/JasonKhew96)'s contribution on this!
-2. ads free - I'll never send ads to you, also I don't even print logs that will identify you. 
-   So feel free to download any type of video from any website.
-
-3. support progress bar 
+1. fast download and upload.
+2. ads free
+3. support progress bar
+4. audio conversion
+5. playlist support
+6. VIP support
 
 # How to deploy?
+
 ## Normal
-1. clone code and update submodule `git submodule update --init --recursive`
-2. install ffmpeg   
+
+1. clone code
+2. install ffmpeg
 3. install Python 3.6+
 4. pip3 install -r requirements.txt
-5. set environment variables `TOKEN`, `APP_ID` and `APP_HASH`
-6. `python3 bot.py`
-7. supervisor on your own preference.
+5. set environment variables `TOKEN`, `APP_ID` and `APP_HASH`, and more if you like.
+6. `python3 ytdl.py`
 
 ## docker
-see [here](https://github.com/tgbot-collection/BotsRunner)
+
+Compatible with amd64, arm64 and armv7l
+
+### 1. get docker-compose.yml
+
+Download this file to a directory, for example `~/ytdl/docker-compose.yml`
+
+### 2. create VIP database
+
+```shell
+mkdir ~/ytdl/data/
+touch ~/ytdl/data/vip.sqlite
+```
+
+### 3. create env file
+
+```shell
+mkdir ~/ytdl/env/
+vim ~/ytdl/env/ytdl.env
+```
+
+you can configure all the following environment variables:
+
+* APP_ID: **REQUIRED**
+* APP_HASH: **REQUIRED**
+* TOKEN: **REQUIRED**
+* REDIS: **REQUIRED**
+* OWNER: owner username
+* QUOTA: quota in bytes
+* EX: quota expire time
+* MULTIPLY: vip quota comparing to normal quota
+* USD2CNY: exchange rate
+* VIP: enable VIP or not, default: disable
+* AFD_LINK
+* COFFEE_LINK
+* COFFEE_TOKEN
+* AFD_TOKEN
+* AFD_USER_ID
+* WORKERS: default 100
+
+### 4. run
+
+```
+docker-compose up -d
+```
 
 # Command
+
 ```
 start - Let's start
 about - Want to contribute?
@@ -45,10 +103,13 @@ terms - View Terms of Service
 ```
 
 # Test video
+
 https://www.youtube.com/watch?v=BaW_jenozKc
 
 # Test Playlist
+
 https://www.youtube.com/playlist?list=PL1Hdq7xjQCJxQnGc05gS4wzHWccvEJy0w
 
 # License
+
 Apache License 2.0
diff --git a/config.py b/config.py
index 8d9b06b..2239f02 100644
--- a/config.py
+++ b/config.py
@@ -9,15 +9,15 @@ __author__ = "Benny <benny.think@gmail.com>"
 
 import os
 
-QUOTA = 5 * 1024 * 1024 * 1024  # 5G
+QUOTA = os.getenv("QUOTA", 5 * 1024 * 1024 * 1024)  # 5G
 if os.uname().sysname == "Darwin":
     QUOTA = 10 * 1024 * 1024  # 10M
 
-EX = 24 * 3600
-MULTIPLY = 5  # VIP1 is 5*5-25G, VIP2 is 50G
-USD2CNY = 6  # $5 --> ¥30
+EX = os.getenv("EX", 24 * 3600)
+MULTIPLY = os.getenv("MULTIPLY", 5)  # VIP1 is 5*5-25G, VIP2 is 50G
+USD2CNY = os.getenv("USD2CNY", 6)  # $5 --> ¥30
 
-ENABLE_VIP = False
+ENABLE_VIP = os.getenv("VIP", False)
 AFD_LINK = os.getenv("AFD_LINK", "https://afdian.net/@BennyThink")
 COFFEE_LINK = os.getenv("COFFEE_LINK", "https://www.buymeacoffee.com/bennythink")
 COFFEE_TOKEN = os.getenv("COFFEE_TOKEN")
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 0000000..66e1aed
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,26 @@
+version: '3.1'
+
+services:
+  socat:
+    image: jmb12686/socat
+    restart: always
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
+    entrypoint: [ "socat", "tcp-listen:2375,fork,reuseaddr","unix-connect:/var/run/docker.sock" ]
+
+  redis:
+    image: redis:alpine
+    restart: always
+    logging:
+      driver: none
+
+  ytdl:
+    image: bennythink/ytdlbot
+    env_file:
+      - env/ytdl.env
+    volumes:
+      - ./data/vip.sqlite:/ytdlbot/vip.sqlite
+    restart: always
+    depends_on:
+      - socat
+      - redis
\ No newline at end of file