修改逻辑

Dockerfile

@@ -3,7 +3,9 @@ ADD app.py requirements.txt /app/
 ENV SLACK_SIGNING_SECRET=***
 ENV SLACK_BOT_TOKEN=xoxb-***
 ENV DINGTALK_WEBHOOK='https://oapi.dingtalk.com/robot/send?access_token=这里填写自己钉钉群自定义机器人的token'
+ENV PORT=3000
 WORKDIR /app
 RUN pip install -r requirements.txt
 RUN chmod +x app.py
+EXPOSE 3000
 ENTRYPOINT [ "python", "app.py" ]