pip install in Dockerfile is failing

Hi I have created a Dockerfile for my app as below but it failed when I try to build the dockerimage .

FROM python:alpine3.7
COPY . /app
WORKDIR /app
RUN pip install --upgrade pip
RUN pip install -r requirements.txt
CMD python ./index.py

here is the content of requirements.txt

flask
numpy
pandas 
SQLAlchemy
pyodbc

when it gets to RUN pip install -r requirements.txt
it can install flask but after that look like between numpy and pandas it start to generate error for many many pages.

any help?

Source: StackOverflow