FROM mcr.microsoft.com/windows/servercore:%%PLACEHOLDER%%

SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop'; $ProgressPreference = 'SilentlyContinue';"]

# https://github.com/docker-library/python/pull/557

ENV PYTHONIOENCODING UTF-8

ENV PYTHON_VERSION %%PLACEHOLDER%%

ENV PYTHON_RELEASE %%PLACEHOLDER%%

RUN $url = ('https://www.python.org/ftp/python/{0}/python-{1}-amd64.exe' -f $env:PYTHON_RELEASE, $env:PYTHON_VERSION); \

Write-Host ('Downloading {0} ...' -f $url); \

[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; \

Invoke-WebRequest -Uri $url -OutFile 'python.exe'; \

\

Write-Host 'Installing ...'; \

# https://docs.python.org/3.5/using/windows.html#installing-without-ui

Start-Process python.exe -Wait \

-ArgumentList @( \

'/quiet', \

'InstallAllUsers=1', \

'TargetDir=C:\Python', \

'PrependPath=1', \

'Shortcuts=0', \

'Include_doc=0', \

'Include_pip=0', \

'Include_test=0' \

); \

\

# the installer updated PATH, so we should refresh our local value

$env:PATH = [Environment]::GetEnvironmentVariable('PATH', [EnvironmentVariableTarget]::Machine); \

\

Write-Host 'Verifying install ...'; \

Write-Host ' python --version'; python --version; \

\

Write-Host 'Removing ...'; \

Remove-Item python.exe -Force; \

\

Write-Host 'Complete.'

# if this is called "PIP_VERSION", pip explodes with "ValueError: invalid truth value '<VERSION>'"

ENV PYTHON_PIP_VERSION %%PLACEHOLDER%%

# https://github.com/pypa/get-pip

ENV PYTHON_GET_PIP_URL %%PLACEHOLDER%%

ENV PYTHON_GET_PIP_SHA256 %%PLACEHOLDER%%

RUN Write-Host ('Downloading get-pip.py ({0}) ...' -f $env:PYTHON_GET_PIP_URL); \

[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; \

Invoke-WebRequest -Uri $env:PYTHON_GET_PIP_URL -OutFile 'get-pip.py'; \

Write-Host ('Verifying sha256 ({0}) ...' -f $env:PYTHON_GET_PIP_SHA256); \

if ((Get-FileHash 'get-pip.py' -Algorithm sha256).Hash -ne $env:PYTHON_GET_PIP_SHA256) { \

Write-Host 'FAILED!'; \

exit 1; \

}; \

\

Write-Host ('Installing pip=={0} ...' -f $env:PYTHON_PIP_VERSION); \

python get-pip.py \

--disable-pip-version-check \

--no-cache-dir \

('pip=={0}' -f $env:PYTHON_PIP_VERSION) \

; \

Remove-Item get-pip.py -Force; \

\

Write-Host 'Verifying pip install ...'; \

pip --version; \

\

Write-Host 'Complete.'

CMD ["python"]