Work CD-CI

- Fix github release steps (following template).

***NO_CI***

Author: josesimoes

azure-pipelines.yml

@@ -92,6 +92,28 @@ steps:
   continueOnError: true
   displayName: Push "Server" variant NuGet package to NuGet
 
+- powershell: |
+    # get subject and commit message for commit
+    $commitMessage = git log --format='%B' -1
+
+    # need to flatten message by removing new lines
+    $commitMessage = $commitMessage -replace "`r`n", " "
+
+    if($commitMessage -like "*PUBLISH_RELEASE*")
+    {
+      # set variable
+      Write-Host "$("##vso[task.setvariable variable=RELEASE_DRAFT]")false"
+      Write-Host "Release draft: FALSE"
+    }
+    else
+    {
+      # set variable
+      Write-Host "$("##vso[task.setvariable variable=RELEASE_DRAFT]")true"
+      Write-Host "Release draft: TRUE"
+    }
+
+  displayName: set release draft var
+
 # create or update GitHub release
 - task: GitHubReleasePublish@1
   inputs:
@@ -102,11 +124,12 @@ steps:
     githubReleaseTitle: '$(nugetPackageName) Library v$(MY_NUGET_VERSION)'
     githubReleaseNotes: 'Check the [changelog]($(Build.Repository.Uri)/blob/$(Build.SourceBranchName)/CHANGELOG.md).<br><br><h4>Install from nanoFramework MyGet development feed</h4><br>The following NuGet packages are available for download from this release:<br>:package: [.NET](https://www.myget.org/feed/nanoframework-dev/package/nuget/$(nugetPackageName)/$(MY_NUGET_VERSION)) v$(MY_NUGET_VERSION)<br>:package: [.NET (client API only)](https://www.myget.org/feed/nanoframework-dev/package/nuget/nanoFramework.System.Net.Http.Client/$(MY_NUGET_VERSION)) v$(MY_NUGET_VERSION)<br>:package: [.NET (server API only)](https://www.myget.org/feed/nanoframework-dev/package/nuget/nanoFramework.System.Net.Http.Server/$(MY_NUGET_VERSION)) v$(MY_NUGET_VERSION)'
     githubTargetCommitsh: $(Build.SourceVersion)
-    githubReleaseDraft: true
+    githubReleaseDraft: $(RELEASE_DRAFT)
     githubReleasePrerelease: true
     githubReuseDraftOnly: true
     githubReuseRelease: true
     githubEditRelease: true
+    githubDeleteEmptyTag: true
     githubReleaseAsset: '$(Build.ArtifactStagingDirectory)/*.nupkg'
   condition: and( succeeded(), not( startsWith(variables['Build.SourceBranch'], 'refs/pull') ), not( startsWith(variables['Build.SourceBranch'], 'refs/tags/v') ) )
   displayName: Create/Update GitHub release
@@ -121,13 +144,34 @@ steps:
     githubReleaseTitle: '$(nugetPackageName) Library v$(MY_NUGET_VERSION)'
     githubReleaseNotes: 'Check the [changelog]($(Build.Repository.Uri)/blob/$(Build.SourceBranchName)/CHANGELOG.md).<br><br><h4>Install from NuGet</h4><br>The following NuGet packages are available for download from this release:<br>:package: [.NET](https://www.nuget.org/packages/$(nugetPackageName)/$(MY_NUGET_VERSION)) v$(MY_NUGET_VERSION).<br>:package: [.NET (client API only)](https://www.nuget.org/packages/nanoFramework.System.Net.Http.Client/$(MY_NUGET_VERSION)) v$(MY_NUGET_VERSION)<br>:package: [.NET (server API only)](https://www.nuget.org/packages/nanoFramework.System.Net.Http.Server/$(MY_NUGET_VERSION)) v$(MY_NUGET_VERSION)'
     githubTargetCommitsh: $(Build.SourceVersion)
-    githubReleaseDraft: false
-    githubReleasePrerelease: false
+    githubReleaseDraft: $(RELEASE_DRAFT)
+    githubReleasePrerelease: true
     githubReuseDraftOnly: false
     githubReuseRelease: true
     githubEditRelease: true
+    githubDeleteEmptyTag: true
     githubReleaseAsset: '$(Build.ArtifactStagingDirectory)/*.nupkg'
-  condition: and( succeeded(), startsWith(variables['Build.SourceBranch'], 'refs/tags/v') )
+  condition: and( succeeded(), startsWith(variables['Build.SourceBranch'], 'refs/tags/v'), contains(variables['Build.SourceBranch'], 'preview') )
+  displayName: Create/Update GitHub release
+
+# create or update GitHub release ON tags from release or master branches
+- task: GitHubReleasePublish@1
+  inputs:
+    githubEndpoint: 'nanoframework'
+    githubOwner: 'nanoframework'
+    githubRepositoryName: $(repoName)
+    githubTag: v$(MY_NUGET_VERSION)
+    githubReleaseTitle: '$(nugetPackageName) Library v$(MY_NUGET_VERSION)'
+    githubReleaseNotes: 'Check the [changelog]($(Build.Repository.Uri)/blob/$(Build.SourceBranchName)/CHANGELOG.md).<br><br><h4>Install from NuGet</h4><br>The following NuGet packages are available for download from this release:<br>:package: [.NET](https://www.nuget.org/packages/$(nugetPackageName)/$(MY_NUGET_VERSION)) v$(MY_NUGET_VERSION).<br>:package: [.NET (client API only)](https://www.nuget.org/packages/nanoFramework.System.Net.Http.Client/$(MY_NUGET_VERSION)) v$(MY_NUGET_VERSION)<br>:package: [.NET (server API only)](https://www.nuget.org/packages/nanoFramework.System.Net.Http.Server/$(MY_NUGET_VERSION)) v$(MY_NUGET_VERSION)'
+    githubTargetCommitsh: $(Build.SourceVersion)
+    githubReleaseDraft: false
+    githubReleasePrerelease: false
+    githubReuseDraftOnly: false
+    githubReuseRelease: false
+    githubEditRelease: false
+    githubDeleteEmptyTag: true
+    githubReleaseAsset: '$(Build.ArtifactStagingDirectory)/*.nupkg'
+  condition: and( succeeded(), startsWith(variables['Build.SourceBranch'], 'refs/tags/v'), not(contains(variables['Build.SourceBranch'], 'preview') ) )
   displayName: Create/Update GitHub release
 
 # step from template @ nf-tools repo