Dockerfile-windows-servercore.template

FROM mcr.microsoft.com/windows/{{ env.windowsVariant }}:{{ env.windowsRelease }}

# $ProgressPreference: https://github.com/PowerShell/PowerShell/issues/2138#issuecomment-251261324
SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop'; $ProgressPreference = 'SilentlyContinue';"]

# PATH isn't actually set in the Docker image, so we have to set it from within the container
RUN $newPath = ('{0}\docker;{1}' -f $env:ProgramFiles, $env:PATH); \
	Write-Host ('Updating PATH: {0}' -f $newPath); \
	[Environment]::SetEnvironmentVariable('PATH', $newPath, [EnvironmentVariableTarget]::Machine);
# doing this first to share cache across versions more aggressively

ENV DOCKER_VERSION {{ .version }}
ENV DOCKER_URL {{ .arches["windows-amd64"].dockerUrl }}
# TODO ENV DOCKER_SHA256
# https://github.com/docker/docker-ce/blob/5b073ee2cf564edee5adca05eee574142f7627bb/components/packaging/static/hash_files !!
# (no SHA file artifacts on download.docker.com yet as of 2017-06-07 though)

RUN Write-Host ('Downloading {0} ...' -f $env:DOCKER_URL); \
	Invoke-WebRequest -Uri $env:DOCKER_URL -OutFile 'docker.zip'; \
	\
	Write-Host 'Expanding ...'; \
	Expand-Archive docker.zip -DestinationPath $env:ProgramFiles; \
# (this archive has a "docker/..." directory in it already)
	\
	Write-Host 'Removing ...'; \
	Remove-Item @( \
			'docker.zip', \
			('{0}\docker\dockerd.exe' -f $env:ProgramFiles) \
		) -Force; \
	\
	Write-Host 'Verifying install ("docker --version") ...'; \
	docker --version; \
	\
	Write-Host 'Complete.';