Docker课程教程，python pip失败
Docker课程教程，python pip失败
提问于 2017-10-11 17:48:45
我正在遵循在https://docker-curriculum.com/教程，以产生我的第一个码头形象。在第2.4节中，我们将了解如何使用基本映像python:3-onbuild配置一个简单的Dockerfile，该文件将自动运行pip并安装来自requirements.txt的依赖项。
问题是，当我试图构建坞时，这些包根本无法加载：
mgitt@mgpc:~/workspace/docker-curriculum/flask-app$ docker build -t prakhar1989/catnip .
Sending build context to Docker daemon 8.704kB
Step 1/3 : FROM python:3-onbuild
# Executing 3 build triggers...
Step 1/1 : COPY requirements.txt /usr/src/app/
---> Using cache
Step 1/1 : RUN pip install --no-cache-dir -r requirements.txt
---> Running in 74c4e94fa1ba
Collecting Flask (from -r requirements.txt (line 1))
Retrying (Retry(total=4, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7fc6592831d0>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution',)': /simple/flask/
Retrying (Retry(total=3, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7fc659283cc0>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution',)': /simple/flask/
Retrying (Retry(total=2, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7fc659283208>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution',)': /simple/flask/
Retrying (Retry(total=1, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7fc659283470>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution',)': /simple/flask/
Retrying (Retry(total=0, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7fc659283ba8>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution',)': /simple/flask/
Could not find a version that satisfies the requirement Flask (from -r requirements.txt (line 1)) (from versions: )
No matching distribution found for Flask (from -r requirements.txt (line 1))
The command '/bin/sh -c pip install --no-cache-dir -r requirements.txt' returned a non-zero code: 1
mgitt@mgpc:~/workspace/docker-curriculum/flask-app$ 我已经看过这个stackoverflow solution了。这些答案似乎解决了许多人的问题，即无法与域名服务器( DNS )连接，但重置停靠程序或将DNS添加到/etc/dhcp/dhclient.conf对我没有任何帮助。
我已经安装了Docker版本的17.09.0-ce，并且正在Ubuntu 16.04上运行，有什么想法吗？
回答 1
Stack Overflow用户
回答已采纳
发布于 2017-10-11 21:58:35
如果您正在处理代理。码头集装箱根本无法上网的可能性很大。
您可以通过运行
$ docker run -it busybox sh
/ # ping google.com如果它挂了你知道你有问题。现在我们必须找到您的主机用来连接到internet的网络接口。ipconfig会给你一个名字列表，无论哪个用来连接互联网，都是你的IFACENAME。现在运行：
$ nmcli dev list | grep 'IP4.DNS' # Ubuntu <= 14
$ nmcli device show IFACENAME | grep IP4.DNS # Ubuntu >= 15这将列出代理服务器所在的IP_ADDRESS。可能有一个以上，只需使用第一个。创建具有以下内容的文件/etc/docker/daemon.json：
{
"dns": ["IP_ADDRESS", "8.8.8.8"]
}最后，
$ sudo service docker restart现在您应该能够从容器中进行ping操作。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/46694556
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