Set task.json version during build

Author: Oren Novotny

appveyor.yml

@@ -24,6 +24,7 @@ build_script:
   - cmd: 7z a "GitVersion_%GitVersion_NuGetVersion%.zip" .\build\NuGetCommandLineBuild\Tools\*.*
   - cmd: appveyor PushArtifact "GitVersion_%GitVersion_NuGetVersion%.zip"
 
+  - ps: .\build\Update-GitVersionVsoTaskVersion.ps1 .\build\GitVersionVsoTaskBuild\task.json $env:GitVersion_Major $env:GitVersion_Minor $env:GitVersion_Patch
   - cmd: 7z a "GitVersionVsoBuildStep_%GitVersion_NuGetVersion%.zip" .\build\GitVersionVsoTaskBuild\*.*
   - cmd: appveyor PushArtifact "GitVersionVsoBuildStep_%GitVersion_NuGetVersion%.zip"
 

build/Update-GitVersionVsoTaskVersion.ps1

@@ -0,0 +1,17 @@
+param (
+[string] $filePath,
+[string] $major,
+[string] $minor,
+[string] $patch
+)
+
+# Get the task.json as a powershell object
+$task = Get-Content -Raw -Path $filePath | ConvertFrom-Json
+
+$task.version.Major = $major
+$task.version.Minor = $minor
+$task.version.Patch = $patch
+
+# get this as a string again
+
+ConvertTo-Json $task | Set-Content -Path $filePath