title: Why does pipenv fail to install a package inside a docker container
body: <p>Follows a Dockerfile for the sake of reproducibility:</p>
  
  <pre><code># Dockerfile
  FROM ubuntu:16.04
  
  # pipenv install numpy pybind11 mako pyopencl
  
  ENV PYTHONFAULTHANDLER=1 \
      PYTHONUNBUFFERED=1 \
      PYTHONHASHSEED=random \
      PIP_NO_CACHE_DIR=off \
      PIP_DISABLE_PIP_VERSION_CHECK=on \
      PIP_DEFAULT_TIMEOUT=100 \
      PIPENV_HIDE_EMOJIS=true \
      PIPENV_COLORBLIND=true \
      PIPENV_NOSPIN=true \
      PYTHONPATH=/app \
      LC_ALL=C.UTF-8 \
      LANG=C.UTF-8 \
      DEBIAN_FRONTEND=noninteractive
  
  WORKDIR ${PYTHONPATH}
  RUN apt-get update &amp;&amp; apt-get install -y --no-install-recommends \
          python3-pip &amp;&amp; \
      rm -rf /var/lib/apt/lists/*
  RUN pip3 install pipenv
  </code></pre>
  
  <p>Which can be built with:</p>
  
  <pre><code>docker build -f Dockerfile -t pipenv_issue .
  </code></pre>
  
  <p>And run with:</p>
  
  <pre><code>docker run --rm -it pipenv_issue:latest bash
  </code></pre>
  
  <p>Inside which you can try:</p>
  
  <pre><code>pipenv install numpy
  </code></pre>
  
  <p>Which will fail with:</p>
  
  <pre><code>Creating a virtualenv for this project…
  Pipfile: /app/Pipfile
  Using /usr/bin/python3 (3.5.2) to create virtualenv…
  Already using interpreter /usr/bin/python3
  Using base prefix '/usr'
  New python executable in /root/.local/share/virtualenvs/app-4PlAip0Q/bin/python3
  Also creating executable in /root/.local/share/virtualenvs/app-4PlAip0Q/bin/python
  Installing setuptools, pip, wheel...
  done.
  
  Virtualenv location: /root/.local/share/virtualenvs/app-4PlAip0Q
  Creating a Pipfile for this project…
  Installing numpy…
  
  Adding numpy to Pipfile's [packages]…
  Pipfile.lock not found, creating…
  Locking [dev-packages] dependencies…
  Locking [packages] dependencies…
  Updated Pipfile.lock (5a67c1)!
  Installing dependencies from Pipfile.lock (5a67c1)…
  An error occurred while installing numpy==1.16.0 --hash=sha256:00a458d6821b1e87be873f2126d5646b901047a7480e8ae9773ecf214f0e19f3 --hash=sha256:0470c5dc32212a08ebc2405f32e8ceb9a5b1c8ac61a2daf9835ec0856a220495 --hash=sha256:24a9c287a4a1c427c2d45bf7c4fc6180c52a08fa0990d4c94e4c86a9b1e23ba5 --hash=sha256:25600e8901012180a1b7cd1ac3e27e7793586ecd432383191929ac2edf37ff5d --hash=sha256:2d279bd99329e72c30937bdef82b6dc7779c7607c5a379bab1bf76be1f4c1422 --hash=sha256:32af2bcf4bb7631dac19736a6e092ec9715e770dcaa1f85fcd99dec5040b2a4d --hash=sha256:3e90a9fce378114b6c2fc01fff7423300515c7b54b7cc71b02a22bc0bd7dfdd8 --hash=sha256:5774d49516c37fd3fc1f232e033d2b152f3323ca4c7bfefd7277e4c67f3c08b4 --hash=sha256:64ff21aac30d40c20ba994c94a08d439b8ced3b9c704af897e9e4ba09d10e62c --hash=sha256:803b2af862dcad6c11231ea3cd1015d1293efd6c87088be33d713a9b23e9e419 --hash=sha256:95c830b09626508f7808ce7f1344fb98068e63143e6050e5dc3063142fc60007 --hash=sha256:96e49a0c82b4e3130093002f625545104037c2d25866fa2e0c90d6e54f5a1fbc --hash=sha256:a1dd8221f0e69038748f47b8bb3248d0b9ecdf13fe837440951c3d5ff72639bb --hash=sha256:a80ecac5664f420556a725a5646f2d1c60a7c0489d68a38b5056393e949e27ac --hash=sha256:b19a47ff1bd2fca0cacdfa830c967746764c32dca6a0c0328d9c893f4bfe2f6b --hash=sha256:be43df2c563e264b38e3318574d80fc8f365df3fb745270934d2dbe54e006f41 --hash=sha256:c40cb17188f6ae3c5b6efc6f0fd43a7ddd219b7807fe179e71027849a9b91afc --hash=sha256:c6251e0f0ecac53ba2b99d9f0cc16fa9021914a78869c38213c436ba343641f0 --hash=sha256:cb189bd98b2e7ac02df389b6212846ab20661f4bafe16b5a70a6f1728c1cc7cb --hash=sha256:ef4ae41add536cb825d8aa029c15ef510aead06ea5b68daea64f0b9ecbff17db --hash=sha256:f00a2c21f60284e024bba351875f3501c6d5817d64997a0afe4f4355161a8889 --hash=sha256:f1232f98a6bbd6d1678249f94028bccc541bbc306aa5c4e1471a881b0e5a3409 --hash=sha256:fea682f6ddc09517df0e6d5caad9613c6d91a42232aeb082df67e4d205de19cc! Will try again.
  Installing initially failed dependencies…
  [pipenv.exceptions.InstallError]:   File "/usr/local/lib/python3.5/dist-packages/pipenv/core.py", line 1992, in do_install
  [pipenv.exceptions.InstallError]:       skip_lock=skip_lock,
  [pipenv.exceptions.InstallError]:   File "/usr/local/lib/python3.5/dist-packages/pipenv/core.py", line 1253, in do_init
  [pipenv.exceptions.InstallError]:       pypi_mirror=pypi_mirror,
  [pipenv.exceptions.InstallError]:   File "/usr/local/lib/python3.5/dist-packages/pipenv/core.py", line 859, in do_install_dependencies
  [pipenv.exceptions.InstallError]:       retry_list, procs, failed_deps_queue, requirements_dir, **install_kwargs
  [pipenv.exceptions.InstallError]:   File "/usr/local/lib/python3.5/dist-packages/pipenv/core.py", line 763, in batch_install
  [pipenv.exceptions.InstallError]:       _cleanup_procs(procs, not blocking, failed_deps_queue, retry=retry)
  [pipenv.exceptions.InstallError]:   File "/usr/local/lib/python3.5/dist-packages/pipenv/core.py", line 681, in _cleanup_procs
  [pipenv.exceptions.InstallError]:       raise exceptions.InstallError(c.dep.name, extra=err_lines)
  [pipenv.exceptions.InstallError]: ['Collecting numpy==1.16.0 (from -r /tmp/pipenv-6etsbc3u-requirements/pipenv-rs8asrue-requirement.txt (line 1))', '  Downloading https://files.pythonhosted.org/packages/64/24/2e9c72f44cec8c872000d78c54230e40550c494647e352d1d06724cdaee6/numpy-1.16.0-cp35-cp35m-manylinux1_x86_64.whl (17.2MB)']
  [pipenv.exceptions.InstallError]: ['Exception:', 'Traceback (most recent call last):', '  File "/root/.local/share/virtualenvs/app-4PlAip0Q/lib/python3.5/site-packages/pip/_internal/cli/base_command.py", line 176, in main', '    status = self.run(options, args)', '  File "/root/.local/share/virtualenvs/app-4PlAip0Q/lib/python3.5/site-packages/pip/_internal/commands/install.py", line 346, in run', '    session=session, autobuilding=True', '  File "/root/.local/share/virtualenvs/app-4PlAip0Q/lib/python3.5/site-packages/pip/_internal/wheel.py", line 848, in build', '    assert building_is_possible', 'AssertionError']
  ERROR: ERROR: Package installation failed...
  </code></pre>
  
  <p>Why does it fail?</p>
  
  <p>Thanks in advance.</p>
  
  <hr>