build.ps1

param(
    [Parameter(ValueFromPipeline)]
    [string]$progress,
    [Parameter(ValueFromPipeline)]
    [string]$owner = "${env:IMAGE_LABEL_OWNER}",
    [Parameter(ValueFromPipeline)]
    [string]$repository = "${env:IMAGE_LABEL_REPO}",
    [Parameter(ValueFromPipeline)]
    [string]$slug = 'catthehacker/ubuntu',
    [Parameter(ValueFromPipeline)]
    [string[]]$tags,
    [Parameter(ValueFromPipeline)]
    [string]$tag,
    [Parameter(ValueFromPipeline)]
    [string]$node = "${env:NODE}",
    [Parameter(ValueFromPipeline)]
    [string]$distro = 'ubuntu',
    [Parameter(ValueFromPipeline)]
    [string]$type = "${env:TYPE}",
    [Parameter(ValueFromPipeline)]
    [string]$runner = "${env:RUNNER}",
    [Parameter(ValueFromPipeline)]
    [string]$image = 'ubuntu',
    [Parameter(ValueFromPipeline)]
    [string]$platforms = "${env:PLATFORMS}",
    [Parameter(ValueFromPipeline)]
    [string]$build_tag = "${env:BUILD_TAG}",
    [Parameter(ValueFromPipeline)]
    [string]$build_tag_version = "${env:BUILD_TAG_VERSION}",
    [Parameter(ValueFromPipeline)]
    [string]$build_ref = "${env:BUILD_REF}",
    [Parameter(ValueFromPipeline)]
    [string]$from_image = "${env:FROM_IMAGE}",
    [Parameter(ValueFromPipeline)]
    [string]$from_tag = "${env:FROM_TAG}",
    [Parameter(ValueFromPipeline)]
    [switch]$push
)

$basetags = @()

$regstryid = $(& (Get-Command 'docker').source run --rm -d -p 8192:5000 registry:2)

ForEach($platform in $platforms.Split(",")) {
    $arguments = @(
        'buildx',
        'build'
    )

    $arguments += $progress -ne '' ? @("--progress=$progress") : @("--progress=plain")

    $intermediatetag = "localhost:8192/intermediate:$($platform.Replace("/", "-"))"

    $arguments += @(
        "--tag=${intermediatetag}",
        "--build-arg=NODE_VERSION=${node}",
        "--build-arg=DISTRO=${distro}",
        "--build-arg=TYPE=${type}",
        "--build-arg=RUNNER=${runner}",
        "--build-arg=BUILD_DATE=$((Get-Date).ToString('u'))",
        "--build-arg=BUILD_OWNER=${owner}",
        "--build-arg=BUILD_OWNER_MAIL=${owner}",
        "--build-arg=BUILD_REPO=${repository}",
        "--build-arg=BUILD_TAG=${build_tag}",
        "--build-arg=BUILD_TAG_VERSION=${build_tag_version}",
        "--build-arg=BUILD_REF=${build_ref}",
        "--build-arg=FROM_IMAGE=${from_image}",
        "--build-arg=FROM_TAG=${from_tag}",
        "--file=./linux/${image}/Dockerfile",
        "--platform=${platform}",
        "--load",
        '.'
    )

    & (Get-Command 'docker').source $arguments

    # Not using buildx here, because buildx doesn't like a localhost registry
    $arguments = @(
        'build'
    )

    $arguments += $progress -ne '' ? @("--progress=$progress") : @("--progress=plain")

    $imageid = $(& (Get-Command 'docker').source create "${intermediatetag}")

    $envfileContent = $(& (Get-Command 'docker').source cp "${imageid}:/etc/environment" - | tar x --to-stdout)

    & (Get-Command 'docker').source rm "${imageid}"

    echo "FROM ${intermediatetag}" > Dockerfile.tmp

    ForEach($envline in $envfileContent.Split("\n")) {
        echo "ENV $envline" >> Dockerfile.tmp
    }

    $arguments += @(
        "--tag=${intermediatetag}",
        "--file=./Dockerfile.tmp",
        '.'
    )

    & (Get-Command 'docker').source $arguments

    & (Get-Command 'docker').source push ${intermediatetag}

    $basetags += @("${intermediatetag}")
}

$arguments = @()

if($push -ne $true) {
   $arguments += @("--dry-run")
}

$tags.Count -ne 0 ? ($tags | ForEach-Object { $arguments += @("--tag=$_") }) : ""

$arguments += $tag -ne '' ? @("--tag=$tag") : @()

& (Get-Command 'docker').source buildx imagetools create $arguments $basetags

& (Get-Command 'docker').source stop $regstryid