python setup.py egg_info fails on ppc64le during scikit-image install

[cwpearson]

Run

make build_and_push

on a ppc64le system, and see

Step 9/18 : RUN pip3 install --user numpy scikit-image
 ---> Running in 96526df0b4b6
Collecting numpy
  Using cached numpy-1.14.1.zip
Collecting scikit-image
  Downloading scikit-image-0.13.1.tar.gz (26.1MB)
Collecting matplotlib>=1.3.1 (from scikit-image)
  Downloading matplotlib-2.1.2.tar.gz (36.2MB)
Collecting scipy>=0.17.0 (from scikit-image)
  Downloading scipy-1.0.0.tar.gz (15.2MB)
Collecting six>=1.7.3 (from scikit-image)
  Downloading six-1.11.0-py2.py3-none-any.whl
Collecting networkx>=1.8 (from scikit-image)
  Downloading networkx-2.1.zip (1.6MB)
Collecting pillow>=2.1.0 (from scikit-image)
  Downloading Pillow-5.0.0.tar.gz (14.2MB)
Collecting PyWavelets>=0.4.0 (from scikit-image)
  Downloading PyWavelets-0.5.2.tar.gz (4.4MB)
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-build-jw5wo631/PyWavelets/setup.py", line 12, in <module>
        from numpy import get_include as get_numpy_include
    ImportError: No module named 'numpy'
    
    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-jw5wo631/PyWavelets/
The command '/bin/sh -c pip3 install --user numpy scikit-image' returned a non-zero code: 1
Makefile:35: recipe for target 'build_cpu' failed