build.ps1 in r10k-3.0.4

- old
+ new
@@ -4,35 +4,103 @@
 {
   $thisName = $MyInvocation.MyCommand.Name
   [IO.Path]::GetDirectoryName((Get-Content function:$thisName).File)
 }
 
-# installs gems for build and test and grabs base images
-function Invoke-ContainerBuildSetup
+function Get-ContainerVersion
 {
-  Push-Location (Get-CurrentDirectory)
-  bundle install --path '.bundle/gems'
-  bundle exec puppet-docker update-base-images ubuntu:16.04
-  Pop-Location
+  # shallow repositories need to pull remaining code to `git describe` correctly
+  if (Test-Path "$(git rev-parse --git-dir)/shallow")
+  {
+    git pull --unshallow
+  }
+
+  # tags required for versioning
+  git fetch origin 'refs/tags/*:refs/tags/*'
+  (git describe) -replace '-.*', ''
 }
 
-function Build-Container($Name, $Repository = '127.0.0.1')
+function Lint-Dockerfile($Path)
 {
+  hadolint --ignore DL3008 --ignore DL3018 --ignore DL4000 --ignore DL4001 $Path
+}
+
+function Build-Container(
+  $Namespace = 'puppet',
+  $Version = (Get-ContainerVersion),
+  $Vcs_ref = $(git rev-parse HEAD))
+{
   Push-Location (Join-Path (Get-CurrentDirectory) '..')
-  bundle exec puppet-docker local-lint $Name
-  bundle exec puppet-docker build $Name --no-cache --repository $Repository --build-arg namespace=$Repository
+
+  $build_date = (Get-Date).ToUniversalTime().ToString('o')
+  $docker_args = @(
+    '--pull',
+    '--build-arg', "vcs_ref=$Vcs_ref",
+    '--build-arg', "build_date=$build_date",
+    '--build-arg', "version=$Version",
+    '--file', "r10k/Dockerfile",
+    '--tag', "$Namespace/r10k:$Version"
+  )
+
+  docker build $docker_args r10k
+
   Pop-Location
 }
 
-function Invoke-ContainerTest($Name, $Repository = '127.0.0.1')
+function Invoke-ContainerTest(
+  $Namespace = 'puppet',
+  $Version = (Get-ContainerVersion))
 {
   Push-Location (Join-Path (Get-CurrentDirectory) '..')
-  bundle exec puppet-docker spec $Name --image $Repository/$Name
+
+  bundle install --path .bundle/gems
+  $ENV:PUPPET_TEST_DOCKER_IMAGE = "$Namespace/r10k:$Version"
+  bundle exec rspec r10k/spec
+
   Pop-Location
 }
 
-# removes any temporary containers / images used during builds
-function Clear-ContainerBuilds
+# removes temporary layers / containers / images used during builds
+# removes $Namespace/$Name images > 14 days old by default
+function Clear-ContainerBuilds(
+  $Namespace = 'puppet',
+  $Name,
+  $OlderThan = [DateTime]::Now.Subtract([TimeSpan]::FromDays(14))
+)
 {
+  Write-Output 'Pruning Containers'
   docker container prune --force
+
+  # this provides example data which ConvertFrom-String infers parsing structure with
+  $template = @'
+{Version*:1.2.3} {ID:5b84704c1d01} {[DateTime]Created:2019-02-07 18:24:51} +0000 GMT
+{Version*:latest} {ID:0123456789ab} {[DateTime]Created:2019-01-29 00:05:33} +0000 GMT
+'@
+  $output = docker images --filter=reference="$Namespace/${Name}" --format "{{.Tag}} {{.ID}} {{.CreatedAt}}"
+  Write-Output @"
+
+Found $Namespace/${Name} images:
+$($output | Out-String)
+
+"@
+
+  if ($output -eq $null) { return }
+
+  Write-Output "Filtering removal candidates..."
+  # docker image prune supports filter until= but not repository like 'puppetlabs/foo'
+  # must use label= style filtering which is a bit more inconvenient
+  # that output is also not user-friendly!
+  # engine doesn't maintain "last used" or "last pulled" metadata, which would be more useful
+  # https://github.com/moby/moby/issues/4237
+  $output |
+    ConvertFrom-String -TemplateContent $template |
+    ? { $_.Created -lt $OlderThan } |
+    # ensure 'latest' are listed first
+    Sort-Object -Property Version -Descending |
+    % {
+      Write-Output "Removing Old $Namespace/${Name} Image $($_.Version) ($($_.ID)) Created On $($_.Created)"
+      docker image rm $_.ID
+    }
+
+  Write-Output "`nPruning Dangling Images"
   docker image prune --filter "dangling=true" --force
 }