Problem when installing inside docker image ubuntu:14.04 about opencv-python

[skvark]

Your pip version is too old for manylinux wheels. Also you are probably missing wheel package.

pip3 install --upgrade pip
pip3 install wheel

[DrSensor]

still error

pip3 install --upgrade pip && \
        pip3 install --upgrade wheel && \
        pip3 install opencv-python

Downloading/unpacking pip from https://pypi.python.org/packages/b6/ac/7015eb97dc749283ffdec1c3a88ddb8ae03b8fad0f0
e611408f196358da3/pip-9.0.1-py2.py3-none-any.whl#md5=297dbd16ef53bcef0447d245815f5144
  Downloading pip-9.0.1-py2.py3-none-any.whl (1.3MB): 1.3MB downloaded
Installing collected packages: pip
  Found existing installation: pip 1.5.4
    Not uninstalling pip at /usr/lib/python3/dist-packages, owned by OS
Successfully installed pip
Cleaning up...
Requirement already up-to-date: wheel in /usr/local/lib/python3.4/dist-packages
Cleaning up...
Downloading/unpacking opencv-python
  Could not find any downloads that satisfy the requirement opencv-python
Cleaning up...
No distributions at all found for opencv-python
Storing debug log for failure in /root/.pip/pip.log

[cachitas]

Try to pip install -U setuptools before also. Recently, I've obersevd that sometimes setuptools and distutils conflict with each other. I believe I saw this with docker...

I got to the point where for every new virtual environement I create, first thing I do is pip install -U pip setuptools wheel.

[skvark]

Pip 1.5.4 is over 3 years old. Please consider using Python virtual envs.

This issue is not related to opencv-python. Please ask general Python (package management) questions via Stackoverflow or some other programming community.