Page is not working after using Docker

Question

I created a web application with Django and when I run the command "python Manage.py runserser" the page runs normally. But after running the Docker container the page appears as not working:

Docker-Compose up -d

Creating network "devbook_default" with the default driver
Creating mongodb_container ... done
Creating devbook_web_1     ... done

Dockerfile:

    FROM python:3.9

    ENV PYTHONDONTWRIETBYTECODE 1
    ENV PYTHONNUMBUFFERED 1
    
    WORKDIR /projeto
    
    COPY requirements.txt .
    RUN pip install -r requirements.txt
    
    COPY . .

Docker-Compose.yml

version: "3.8"

services:
  web:
    build: .
    command: python manage.py runserver
    volumes:
      - .:/code
    ports:
      - 8000:8000
    depends_on:
      - db
  db:
    image: mongo
    container_name: mongodb_container
    ports:
    - "27017:27017"
    environment:
      - MONGO_INITDB_ROOT_NAME=Devbook
    volumes:
      - /data/db:/data/db

Using the Docker-Compose ps

Name                    Command             State                      Ports
------------------------------------------------------------------------------------------------------
devbook_web_1       python manage.py runserver    Up      0.0.0.0:8000->8000/tcp,:::8000->8000/tcp
mongodb_container   docker-entrypoint.sh mongod   Up      0.0.0.0:27017->27017/tcp,:::27017->27017/tcp

When access to localhost:8000 page appears like this: