如果两个容器都部署在同一主机上，并且希望从“ minombre”到“ myapi” Django应用进行API调用，则可以在“ minombre”视图中使用以下URL，它应该可以工作。

response = requests.get('http://myapi:8001/')  # where myapi is the container name

编辑

两个分别在端口8000和8001上运行的Django容器minombre和myapi。

(venv) shakeel@my-workstation 20:54:44 ~/workspace $ sudo docker ps
CONTAINER ID        IMAGE                COMMAND                  CREATED             STATUS              PORTS                    NAMES
aefa0c5d4bc6        workspace_minombre   "python manage.py ru…"   15 minutes ago      Up 15 minutes       0.0.0.0:8000->8000/tcp   minombre
558e22e612f5        workspace_myapi      "python manage.py ru…"   15 minutes ago      Up 15 minutes       0.0.0.0:8001->8001/tcp   myapi
(venv) shakeel@my-workstation 20:54:48 ~/workspace $

当DEBUG为True且ALLOWED_HOSTS为空时，将针对['localhost'，'127.0.0.1'，'[:: 1]']验证主机。 [来源] [1]

(venv) shakeel@my-workstation 20:54:51 ~/workspace $ cat minombre/minombre/settings.py | grep "ALLOWED_HOST"
ALLOWED_HOSTS = []
(venv) shakeel@my-workstation 20:55:29 ~/workspace $ curl -I http://127.0.0.1:8000/polls/
HTTP/1.1 200 OK
Date: Tue,05 Nov 2019 20:56:01 GMT
Server: WSGIServer/0.2 CPython/3.8.0
Content-Type: text/html; charset=utf-8
X-Frame-Options: SAMEORIGIN
Content-Length: 11

(venv) shakeel@my-workstation 20:56:01 ~/workspace $

现在我已将容器名称添加到允许的主机中

(venv) shakeel@my-workstation 21:00:42 ~/workspace $ cat myapi/myapi/settings.py |grep "ALLOWED_HOST"
ALLOWED_HOSTS = ['myapi','127.0.0.1',]

我向API myapi：8001添加了简单的json响应

(venv) shakeel@my-workstation 21:04:57 ~/workspace $ cat myapi/polls/views.py
from django.shortcuts import render
import json
from django.http import HttpResponse


def index(request):
    responseData = {
        'id': 4,'name': 'Test Response','roles' : ['Admin','User']
    }

    return HttpResponse(json.dumps(responseData))

(venv) shakeel@my-workstation 21:05:02 ~/workspace $
(venv) shakeel@my-workstation 21:05:04 ~/workspace $

现在我们在minombre：8000的视图下调用API myapi：8001

(venv) shakeel@my-workstation 21:05:04 ~/workspace $ cat minombre/polls/views.py
from django.shortcuts import render
import requests
from django.http import HttpResponse
from django.shortcuts import render


def index(request):
    response = requests.get('http://myapi:8001/polls/')
    data = response.json()
    return HttpResponse(data)
(venv) shakeel@my-workstation 21:05:14 ~/workspace $

现在，当您调用minombre API成功响应时。

(venv) shakeel@my-workstation 21:05:14 ~/workspace $ curl -I http://127.0.0.1:8000/polls/
HTTP/1.1 200 OK
Date: Tue,05 Nov 2019 20:41:10 GMT
Server: WSGIServer/0.2 CPython/3.8.0
Content-Type: text/html; charset=utf-8
X-Frame-Options: SAMEORIGIN
Content-Length: 11

(venv) shakeel@my-workstation 21:05:14 ~/workspace $

但是使用设置ALLOWED_HOSTS = ['myapi',]，我们无法从容器访问，但是您仍然可以从主机连接。

(venv) shakeel@my-workstation 21:06:19 ~/workspace $ curl -I http://127.0.0.1:8001/polls/
HTTP/1.1 200 OK
Date: Tue,05 Nov 2019 21:06:31 GMT
Server: WSGIServer/0.2 CPython/3.8.0
Content-Type: text/html; charset=utf-8
X-Frame-Options: SAMEORIGIN
Content-Length: 62

(venv) shakeel@my-workstation 21:07:15 ~/workspace $ 
(venv) shakeel@my-workstation 21:08:15 ~/workspace $ cat myapi/myapi/settings.py |grep "ALLOWED_HOST"
ALLOWED_HOSTS = ['myapi',]
(venv) shakeel@my-workstation 21:08:35 ~/workspace $ sudo docker exec -it minombre bash
root@aefa0c5d4bc6:/code# curl -I http://127.0.0.1:8001/polls/
curl: (7) Failed to connect to 127.0.0.1 port 8001: Connection refused
root@aefa0c5d4bc6:/code#

知道了！！！我只需要在 api的 settings.py 文件的ALLOWED_HOSTS中提及主机名。谢谢大家的帮助！

ALLOWED_HOSTS = ['127.0.0.1',]

这是解决方案，您只需要两个应用程序即可组成同一网络。

下面是docker-compose.yml文件。

version: '3'
 networks:
   main:

services:
 myapi:

 build: ./myapi
 container_name: myapi
 ports:
   - "8001:8001"
  networks:
   - main
 command: python manage.py runserver 0.0.0.0:8001

minombre:

 build: ./minombre
 container_name: minombre
 ports:
  - "8000:8000"
  networks:
  - main
 command: python manage.py runserver 0.0.0.0:8000
 depends_on:
   - myapi

现在它们将成为同一网络的一部分，因此您可以轻松地通过docker DNS来访问API。