在高山码头镜像中使用asyncpg python模块

Question

我正在尝试使用python模块asyncpg构建一个基于python:3-8.alpine的映像。

下面是我的Dockerfile的一部分：

FROM python:3.8-alpine

RUN apk add gcc
RUN apk add python3-dev

RUN pip3 install asyncpg

我添加了gcc和python3-dev，因为我认为我需要它们能够根据文档构建asyncpg：https://magicstack.github.io/asyncpg/current/installation.html (但我不确定，我认为我应该能够在不构建这个模块的情况下进行安装)

但我在构建镜像时出现了以下错误：

gcc -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -DTHREAD_STACK_SIZE=0x100000 -fPIC -I/usr/local/include/python3.8 -c asyncpg/pgproto/pgproto.c -o build/temp.linux-x86_64-3.8/asyncpg/pgproto/pgproto.o -O2 -fsigned-char -Wall -Wsign-compare -Wconversion
In file included from asyncpg/pgproto/pgproto.c:29:
/usr/local/include/python3.8/Python.h:11:10: fatal error: limits.h: No such file or directory
    11 | #include <limits.h>
       |          ^~~~~~~~~~
compilation terminated.
error: command 'gcc' failed with exit status 1

如何解决此错误并安装asyncpg？

谢谢

Answer 1

你必须安装构建工具，而不仅仅是gcc。您还可以删除RUN apk add python3-dev步骤。因为您使用的是python作为基础映像。

FROM python:3.8-alpine

RUN apk add --no-cache build-base

RUN pip3 install asyncpg 

构建标准输出

Step 3/3 : RUN pip3 install asyncpg
 ---> Running in e109c84feec3
Collecting asyncpg
  Downloading asyncpg-0.20.1.tar.gz (734 kB)
Building wheels for collected packages: asyncpg
  Building wheel for asyncpg (setup.py): started
  Building wheel for asyncpg (setup.py): finished with status 'done'
  Created wheel for asyncpg: filename=asyncpg-0.20.1-cp38-cp38-linux_x86_64.whl size=1337371 sha256=5a0dcfc8c327eb4068814a9bf0a1d9beee1b9c440c1100efcede8ef63b1dac09
  Stored in directory: /root/.cache/pip/wheels/22/c9/61/991ebd5df043025e222695b7c4bc84e527bf3f0239073f0ea2
Successfully built asyncpg
Installing collected packages: asyncpg
Successfully installed asyncpg-0.20.1
Removing intermediate container e109c84feec3
 ---> 21dacd97e784
Successfully built 21dacd97e784

Answer 2

您忘记添加musl-dev库。下面是可用的Dockerfile

FROM python:3.8-alpine

RUN apk add gcc python3-dev musl-dev

RUN pip3 install asyncpg