Networking 停止和启动/重新启动pod后，podman端口连接被拒绝

我对使用podman还不熟悉，我正努力学习Richard Walker关于django应用程序容器化的教程（）

它工作正常，直到我尝试停止并重新启动吊舱。然后，我的主机无法再连接到端口（这些端口在构建图像时暴露，在创建pod时映射）。 文件和指南表明，这是一个简单的问题

吊舱人吊舱停止…
播客播客开始

但这似乎不起作用。
如果你能看到我遗漏了什么，我将非常感谢你的帮助

$ podman pod create -p 8000 -p 7000 -p 5432 -n cardpod
8553ad8fc0b14a849598a51c4ffcbffa9d6d094b96b542f0e432fc0d6dfd22ff

$ podman run --name deckofcards-prod-ctr --pod cardpod -d richardwalker.dev/deckofcards-prod-img
3dbf6f9ad043fe65492f0e15be642af92916ad9e09d941e1f96315343a8d2fae

$ curl http://127.0.0.1:7000/deck/
[{"suit":"clubs","face":"queen","value":10},{"suit":"spades","face":"four","value":4},{"suit":"hearts","face":"king","value":10},{"suit":"diamonds","face":"six","value":6},{"suit":"hearts","face":"two","value":2},{"suit":"diamonds","face":"ace","value":1},{"suit":"hearts","face":"eight","value":8},{"suit":"clubs","face":"three","value":3},{"suit":"spades","face":"five","value":5},{"suit":"clubs","face":"nine","value":9},{"suit":"spades","face":"nine","value":9},{"suit":"diamonds","face":"five","value":5},{"suit":"hearts","face":"nine","value":9},{"suit":"diamonds","face":"two","value":2},{"suit":"clubs","face":"king","value":10},{"suit":"diamonds","face":"eight","value":8},{"suit":"clubs","face":"ace","value":1},{"suit":"hearts","face":"three","value":3},{"suit":"spades","face":"jack","value":10},{"suit":"hearts","face":"ten","value":10},{"suit":"spades","face":"king","value":10},{"suit":"spades","face":"ace","value":1},{"suit":"spades","face":"ten","value":10},{"suit":"hearts","face":"five","value":5},{"suit":"hearts","face":"ace","value":1},{"suit":"clubs","face":"eight","value":8},{"suit":"hearts","face":"jack","value":10},{"suit":"diamonds","face":"queen","value":10},{"suit":"clubs","face":"ten","value":10},{"suit":"diamonds","face":"nine","value":9},{"suit":"clubs","face":"five","value":5},{"suit":"clubs","face":"jack","value":10},{"suit":"diamonds","face":"ten","value":10},{"suit":"hearts","face":"queen","value":10},{"suit":"diamonds","face":"seven","value":7},{"suit":"hearts","face":"seven","value":7},{"suit":"hearts","face":"six","value":6},{"suit":"spades","face":"two","value":2},{"suit":"clubs","face":"two","value":2},{"suit":"clubs","face":"seven","value":7},{"suit":"spades","face":"seven","value":7},{"suit":"clubs","face":"four","value":4},{"suit":"spades","face":"queen","value":10},{"suit":"diamonds","face":"king","value":10},{"suit":"spades","face":"six","value":6},{"suit":"diamonds","face":"jack","value":10},{"suit":"diamonds","face":"four","value":4},{"suit":"hearts","face":"four","value":4},{"suit":"clubs","face":"six","value":6},{"suit":"diamonds","face":"three","value":3},{"suit":"spades","face":"three","value":3},{"suit":"spades","face":"eight","value":8}] 


$ podman pod stop cardpod
8553ad8fc0b14a849598a51c4ffcbffa9d6d094b96b542f0e432fc0d6dfd22ff

$ podman pod start cardpod
8553ad8fc0b14a849598a51c4ffcbffa9d6d094b96b542f0e432fc0d6dfd22ff

$ curl http://127.0.0.1:7000/deck/
curl: (7) Failed to connect to 127.0.0.1 port 7000: Connection refused

更多信息：

我可以通过检查“podman日志”看到django服务器正在运行，并且通过查看“podman端口”仍然可以使用映射的端口

dockerfile根据教程：

# FROM directive instructing base image to build upon
FROM python:3.7-slim

# Set environment variables
ENV PYTHONDONTWRITEBYTECODE 1
ENV PYTHONUNBUFFERED 1

# Create and change to working dir
RUN mkdir /code
WORKDIR /code

# Copy code
COPY /release/ /code/

# Install dependencies
COPY requirements.txt /code/
RUN pip install -r requirements.txt

# EXPOSE port 7000 to allow communication to/from server
EXPOSE 7000

# CMD specifies the command to execute to start the server running.
CMD python3 manage.py runserver 0.0.0.0:7000

播客：版本2.0.2
发行版：ubuntu 18.04