我为django rest项目创建了一个docker镜像，包含以下Dockerfile和docker-compose文件：
Dockerfile

FROM python:3

# Set environment variables
ENV PYTHONUNBUFFERED 1

COPY requirements.txt /

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

# Set work directory.
RUN mkdir /app
WORKDIR /app

# Copy project code.
COPY . /app/

EXPOSE 8000

docker-compose文件

version: "3"

services:     
  dj:
    container_name: dj
    build: django
    command: python manage.py runserver 0.0.0.0:8000
    volumes:
      - ./django:/app
    ports:
      - "8000:8000"

然后docker-compose up命令启动服务器，

但在web浏览器我不能访问服务器，浏览器说ERR_ADDRESS_INVALID
Docker版本18。09.2