我正在尝试在Docker映像（FROM astronomerinc/ap-airflow:master-1.10.5-onbuild）上安装sklearn。源图像附带的环境：
4.9.93-linuxkit-aufs）我在scipy==1.3.1中有requirements.txt，并且没有通过pip安装它的问题，但是当我将scikit-learn添加到requirements.txt并再次重建时，出现此错误，提示缺少numpy标头：
creating build/temp.linux-x86_64-3.7
creating build/temp.linux-x86_64-3.7/sklearn
creating build/temp.linux-x86_64-3.7/sklearn/svm
creating build/temp.linux-x86_64-3.7/sklearn/svm/src
creating build/temp.linux-x86_64-3.7/sklearn/svm/src/libsvm
compile options: '-I/usr/lib/python3.7/site-packages/numpy/core/include -c'
g++: sklearn/svm/src/libsvm/libsvm_template.cpp
ar: adding 1 object files to build/temp.linux-x86_64-3.7/liblibsvm-skl.a
running build_ext
customize UnixCCompiler
customize UnixCCompiler using build_ext
resetting extension 'sklearn.svm.liblinear' language from 'c' to 'c++'.
customize UnixCCompiler
customize UnixCCompiler using build_ext
building 'sklearn.__check_build._check_build' extension
compiling C sources
C compiler: gcc -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -Os -fomit-frame-pointer -g -Os -fomit-frame-pointer -g -Os -fomit-frame-pointer -g -DTHREAD_STACK_SIZE=0x100000 -fPIC
creating build/temp.linux-x86_64-3.7/sklearn/__check_build
compile options: '-I/usr/lib/python3.7/site-packages/numpy/core/include -I/usr/lib/python3.7/site-packages/numpy/core/include -I/usr/include/python3.7m -c'
gcc: sklearn/__check_build/_check_build.c
gcc -shared -Wl,--as-needed -Wl,--as-needed build/temp.linux-x86_64-3.7/sklearn/__check_build/_check_build.o -L/usr/lib -Lbuild/temp.linux-x86_64-3.7 -lpython3.7m -o build/lib.linux-x86_64-3.7/sklearn/__check_build/_check_build.cpython-37m-x86_64-linux-gnu.so
building 'sklearn.cluster._dbscan_inner' extension
compiling C++ sources
C compiler: g++ -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -Os -fomit-frame-pointer -g -Os -fomit-frame-pointer -g -Os -fomit-frame-pointer -g -DTHREAD_STACK_SIZE=0x100000 -fPIC
creating build/temp.linux-x86_64-3.7/sklearn/cluster
compile options: '-I/usr/lib/python3.7/site-packages/numpy/core/include -I/usr/lib/python3.7/site-packages/numpy/core/include -I/usr/include/python3.7m -c'
g++: sklearn/cluster/_dbscan_inner.cpp
sklearn/cluster/_dbscan_inner.cpp:652:10: fatal error: numpy/arrayobject.h: No such file or directory
#include "numpy/arrayobject.h"
^~~~~~~~~~~~~~~~~~~~~
compilation terminated.
error: Command "g++ -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -Os -fomit-frame-pointer -g -Os -fomit-frame-pointer -g -Os -fomit-frame-pointer -g -DTHREAD_STACK_SIZE=0x100000 -fPIC -I/usr/lib/python3.7/site-packages/numpy/core/include -I/usr/lib/python3.7/site-packages/numpy/core/include -I/usr/include/python3.7m -c sklearn/cluster/_dbscan_inner.cpp -o build/temp.linux-x86_64-3.7/sklearn/cluster/_dbscan_inner.o -MMD -MF build/temp.linux-x86_64-3.7/sklearn/cluster/_dbscan_inner.o.d" failed with exit status 1
----------------------------------------
ERROR: Command errored out with exit status 1: /usr/bin/python3.7 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-o8ktwf40/scikit-learn/setup.py'"'"'; __file__='"'"'/tmp/pip-install-o8ktwf40/scikit-learn/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /tmp/pip-record-p6ejlhi_/install-record.txt --single-version-externally-managed --compile Check the logs for full command output.
WARNING: You are using pip version 19.2.1, however version 19.2.3 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
The command '/bin/sh -c pip install --no-cache-dir -q -r requirements.txt' returned a non-zero code: 1
我尝试过的几件事：
scikit-learn的较早版本py3-numpy不幸的是，他们都没有工作。 This post建议手动设置路径，但这并不是我要找的答案。
洞察？任何帮助表示赞赏！
我建议您将py-numpy-dev安装在Dockerfile中：
RUN apk add py-numpy-dev