| 1 | <# |
| 2 | .SYNOPSIS |
| 3 | Builds a custom test registry image using wslc and saves it as a .tar file. |
| 4 | .DESCRIPTION |
| 5 | This script builds a custom image using wslc from a specified Dockerfile and saves the resulting image as a .tar file. |
| 6 | This is useful for preparing test images for WSL container tests. |
| 7 | .PARAMETER DockerfileDir |
| 8 | Path to the directory containing the Dockerfile to build. |
| 9 | .PARAMETER ImageTag |
| 10 | Tag for the built image. |
| 11 | .PARAMETER OutputFile |
| 12 | Path to save the exported .tar file. Defaults to <DockerfileDir name>.tar in the current directory. |
| 13 | #> |
| 14 | |
| 15 | [CmdletBinding(SupportsShouldProcess)] |
| 16 | param ( |
| 17 | [string]$DockerfileDir, |
| 18 | [string]$ImageTag, |
| 19 | [string]$OutputFile = "" |
| 20 | ) |
| 21 | |
| 22 | $ErrorActionPreference = "Stop" |
| 23 | Set-StrictMode -Version Latest |
| 24 | |
| 25 | if ($OutputFile -eq "") { |
| 26 | $OutputFile = Join-Path $PWD "$(Split-Path -Leaf $DockerfileDir).tar" |
| 27 | } |
| 28 | |
| 29 | # Verify $OutputFile is a valid path, we can write to it, and that it has a .tar extension |
| 30 | if ([System.IO.Path]::GetExtension($OutputFile) -ne ".tar") { |
| 31 | if (-not $PSCmdlet.ShouldContinue("Are you sure you want to continue?", "Output file '$OutputFile' is not a .tar file.")) { |
| 32 | throw "Aborting due to invalid output file extension." |
| 33 | } |
| 34 | } |
| 35 | |
| 36 | |
| 37 | if ($PSCmdlet.ShouldProcess($ImageTag, "Build image from '$DockerfileDir'")) { |
| 38 | & wslc build -t $ImageTag $DockerfileDir |
| 39 | if ($LASTEXITCODE -ne 0) { throw "wslc build failed with exit code $LASTEXITCODE" } |
| 40 | } |
| 41 | |
| 42 | if ($PSCmdlet.ShouldProcess($OutputFile, "Save image '$ImageTag'")) { |
| 43 | & wslc save --output $OutputFile $ImageTag |
| 44 | if ($LASTEXITCODE -ne 0) { throw "wslc save failed with exit code $LASTEXITCODE" } |
| 45 | |
| 46 | Write-Host "Image built and saved to $OutputFile successfully." |
| 47 | } |
| 48 |