diff --git a/Dockerfile b/Dockerfile
index 7c9b6ac..3ec3b53 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,25 +1,19 @@
-FROM python:3.8-slim-buster
+FROM python:3-alpine
 LABEL maintainer="mailto@wolfbolin.com"
 
-# Why need these step?
-# - fast mirror source
-# - procps contains useful proccess control commands like: free, kill, pkill, ps, top
-# - wget is quite basic tool
-# - vim for online debugging
-# - sync timezone
-RUN sed -i 's/deb.debian.org/mirrors.tuna.tsinghua.edu.cn/g' /etc/apt/sources.list \
-	&& sed -i 's/security.debian.org/mirrors.tuna.tsinghua.edu.cn/g' /etc/apt/sources.list \
-	&& apt-get update && apt-get install -y --no-install-recommends procps wget vim \
-	&& ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
+ENV CRON_SIGNIN='30 9 * * *'
+ENV MULTI=TRUE
+ENV TZ=Asia/Shanghai
+RUN adduser app -D
+RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.tuna.tsinghua.edu.cn/g' /etc/apk/repositories \
+	&& apk add --no-cache tzdata
 
-# Project environment
+WORKDIR /tmp
+ADD requirements.txt ./
+RUN pip3 install -i https://pypi.tuna.tsinghua.edu.cn/simple -r requirements.txt 
+
+USER app
 WORKDIR /var/app
 COPY . /var/app
 
-RUN pip install -i https://pypi.tuna.tsinghua.edu.cn/simple --upgrade pip \
-    && pip install -i https://pypi.tuna.tsinghua.edu.cn/simple -r requirements.txt
-
-# Docker operation parameters
-ENV MULTI TRUE
-
-CMD if [ $MULTI==TRUE ];then python main_multi.py autorun;else python main.py;fi
+CMD ["python3", "./docker.py" ]
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 0000000..9e8f307
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,10 @@
+version: "3"
+
+services:
+  mihoyo-bbs:
+     image: darkatse/mihoyo-bbs
+     environment:
+       - CRON_SIGNIN=30 9 * * *
+       - MULTI=TRUE
+     volumes:
+       - .:/var/app
diff --git a/docker.py b/docker.py
new file mode 100644
index 0000000..28b2ea1
--- /dev/null
+++ b/docker.py
@@ -0,0 +1,57 @@
+import datetime
+import os
+import logging
+import signal
+import time
+#from settings import *
+
+from crontab import CronTab
+
+time_format = "%Y-%m-%d %H:%M:%S"
+logging.basicConfig(
+    level=logging.INFO,
+    format='%(asctime)s %(levelname)s %(message)s',
+    datefmt='%Y-%m-%dT%H:%M:%S')
+
+
+log = logging
+
+def stop_me(_signo, _stack):
+    log.info("Docker container has stoped....")
+    exit(-1)
+
+
+def main():
+    signal.signal(signal.SIGINT, stop_me)
+    log.info("使用DOCKER运行米游社签到")
+    env = os.environ
+    cron_signin = env["CRON_SIGNIN"]
+    cron = CronTab(cron_signin, loop=True, random_seconds=True)
+
+    def next_run_time():
+        nt = datetime.datetime.now().strftime(time_format)
+        delayt = cron.next(default_utc=False)
+        nextrun = datetime.datetime.now() + datetime.timedelta(seconds=delayt)
+        nextruntime = nextrun.strftime(time_format)
+        log.info(f"Current running datetime: {nt}")
+        log.info(f"Next run datetime: {nextruntime}")
+
+    def sign():
+        log.info("Starting signing")
+        multi = env["MULTI"]
+        if multi:
+            os.system("python3 ./main_multi.py autorun")
+        else:
+            os.system("python3 ./main.py")
+
+    sign()
+    next_run_time()
+    while True:
+        ct = cron.next(default_utc=False)
+        time.sleep(ct)
+        sign()
+        next_run_time()
+
+
+if __name__ == '__main__':
+    main()
diff --git a/requirements.txt b/requirements.txt
index f613a62..00cab0b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,3 @@
 httpx>=0.21.1
 requests>=2.26.0
+crontab~=0.22.9