我正在关注docker教程,我正在使用以下部分来构建应用程序:
docker build -t friendlyhello .
它达到第4步,暂停后我收到此错误:
Step 4/7 : RUN pip install -r requirements.txt
---> Running in 7f4635a7510a
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 0x7fe3984d9b10>: Failed to establish a new connection:
[Errno -3] Temporary failure in name resolution',)': /simple/flask/
我不太清楚这个错误意味着什么以及如何解决它.
谢谢你的帮助!