Aws-codebuild-docker-images: How to upgrade pip3 version ?

[hareku]

I'm using the aws/codebuild/golang:1.11 docker image.
But I can't upgrade pip3 (pip) version.

root@4376106bd901:/go# pip3 install --upgrade pip
Downloading/unpacking pip from https://files.pythonhosted.org/packages/c2/d7/90f34cb0d83a6c5631cf71dfe64cc1054598c843a92b400e55675cc2ac37/pip-18.1-py2.py3-none-any.whl#sha256=7909d0a0932e88ea53a7014dfd14522ffef91a464daaaf5c573343852ef98550
  Downloading pip-18.1-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...

root@ed09dfdbe4a5:/go# pip3 --version
pip 1.5.4 from /usr/lib/python3/dist-packages (python 3.4)

How do i upgrade pip?

[hareku]

I solved this issue.

[c0lon]

@hareku Could you explain what you did?