Docker连接错误“连接被NewConnectionError断开”

问题描述

我是docker的新手，我刚刚安装了它，并为django项目做了一些配置。
当我运行 docker build。 时，我遇到这些错误这是什么问题？

 警告：连接后重试（重试（总数= 4，连接=无，读取=无，重定向=无，状态=无））被'NewConnectionError（'< pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f1363b604f0>破坏：无法建立新连接：[Errno -3]重试'）'：/ simple / django / 
  

Dockerfile

 从python：3.8-alpine 
 MAINTAINER RAHUL VERMA 
 
 ENV PYTHONUNBUFFERED 1 
 
 COPY ./requirements.txt /requirements.txt 
 RUN pip install -r /requirements.txt 
 
 RUN mkdir / app 
 WORKDIR app 
 COPY ./app / app 
 
 RUN adduser- D用户
用户用户
  

requirements.txt文件

  Django == 2.2 
 djangorestframework == 3.11.0 
   
 
解决方案
我遇到了与互联网有关的问题，也可以通过以下方法进行检查：
 
 
，这几乎可以肯定是容器内部的网络/ DNS配置存在问题，与pip无关。尝试在Dockerfile中添加 RUN nslookup pypi.org 行，并查看其是否有效。如果您使用的是自定义索引网址，则将其替换为pypi.org。 
 
 
  
 
I am new to docker i just installed it and did some configuration for my django project.
when i am running docker build . i am getting these error whats wrong here?
WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f1363b604f0>: Failed to establish a new connection: [Errno -3] Try again')': /simple/django/
Dockerfile
FROM python:3.8-alpine
MAINTAINER RAHUL VERMA

ENV PYTHONUNBUFFERED 1

COPY ./requirements.txt /requirements.txt
RUN pip install -r /requirements.txt

RUN mkdir /app
WORKDIR app
COPY ./app /app

RUN adduser -D user
USER user
requirements.txt file
Django==2.2
djangorestframework==3.11.0
 解决方案 
I had the same problem it I solveit with the conections of internet or you can check it with this:
"This is almost certainly an issue with the networking/DNS configuration inside the container and not related to pip specifically. Try adding a RUN nslookup pypi.org line to your Dockerfile and see if it works. If you're using a custom index URL then put that instead of pypi.org."
https://github.com/pypa/pip/issues/7460
                        
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