Container.init.ps1
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<# .SYNOPSIS Initializes a container during build. .DESCRIPTION Initializes the container image with the necessary modules and packages. This script should be called from the Dockerfile, during the creation of the container image. ~~~Dockerfile # Thank you Microsoft! Thank you PowerShell! Thank you Docker! FROM mcr.microsoft.com/powershell # Set the shell to PowerShell (thanks again, Docker!) SHELL ["/bin/pwsh", "-nologo", "-command"] # Run the initialization script. This will do all remaining initialization in a single layer. RUN --mount=type=bind,src=./,target=/Initialize ./Initialize/Container.init.ps1 ~~~ The scripts arguments can be provided with either an `ARG` or `ENV` instruction in the Dockerfile. .NOTES Did you know that in PowerShell you can 'use' namespaces that do not really exist? This seems like a nice way to describe a relationship to a container image. That is why this file is using the namespace 'mcr.microsoft.com/powershell'. (this does nothing, but most likely will be used in the future) #> using namespace 'mcr.microsoft.com/powershell' param( # The name of the module to be installed. [string]$ModuleName = $( if ($env:ModuleName) { $env:ModuleName } else { 'ugit' } ), # The packages to be installed. [string[]]$InstallPackages = @( if ($env:InstallPackages) { $env:InstallPackages -split ',' } else { 'git','curl','ca-certificates','libc6','libgcc1'} ), # The modules to be installed. [string[]]$InstallModules = @( if ($env:InstallModules) { $env:InstallModules -split ',' } else { } ) ) # Get the root module directory $rootModuleDirectory = @($env:PSModulePath -split '[;:]')[0] # Determine the path to the module destination. $moduleDestination = "$rootModuleDirectory/$ModuleName" # Copy the module to the destination # (this is being used instead of the COPY statement in Docker, to avoid additional layers). Copy-Item -Path "$psScriptRoot" -Destination $moduleDestination -Recurse -Force # Copy all container-related scripts to the root of the container. Get-ChildItem -Path $PSScriptRoot | Where-Object Name -Match '^Container\..+?\.ps1$' | Copy-Item -Destination / # If we have packages to install if ($InstallPackages) { # install the packages apt-get update && apt-get install -y @installPackages && apt-get clean | Out-Host } # Create a new profile New-Item -Path $Profile -ItemType File -Force | # and import this module in the profile Add-Content -Value "Import-Module $ModuleName" -Force # If we have modules to install if ($InstallModules) { # Install the modules Install-Module -Name $InstallModules -Force -AcceptLicense -Scope CurrentUser # and import them in the profile Add-Content -Path $Profile -Value "Import-Module '$($InstallModules -join "','")'" -Force } # In our profile, push into the module's directory Add-Content -Path $Profile -Value "Get-Module $ModuleName | Split-Path | Push-Location" -Force # If we have a Microservice.ps1 file, run it Add-Content -Path $Profile -Value "if (Test-Path ./Microservice.ps1) { ./Microservice.ps1 }" -Force # Remove the .git directories from any modules Get-ChildItem -Path $rootModuleDirectory -Directory -Force -Recurse | Where-Object Name -eq '.git' | Remove-Item -Recurse -Force # Congratulations! You have successfully initialized the container image. # This script should work in about any module, with minor adjustments. # If you have any adjustments, please put them below here, in the `#region Custom` #region Custom #endregion Custom |