update release script

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

scripts/release.yml

@@ -85,6 +85,35 @@ stages:
         artifactName: 'UbuntuBuild'
         targetPath: $(Build.ArtifactStagingDirectory)
 
+  - job: UbuntuBuild20
+    displayName: "Ubuntu build 20"
+    pool:
+      vmImage: "ubuntu-20.04"
+    steps:
+    - task: PythonScript@0
+      displayName: Build
+      inputs:
+        scriptSource: 'filepath'
+        scriptPath: scripts/mk_unix_dist.py
+        arguments: --dotnet-key=$(Build.SourcesDirectory)/resources/z3.snk
+    - script: git clone https://github.com/z3prover/z3test z3test
+      displayName: 'Clone z3test'
+    - task: PythonScript@0
+      displayName: Test
+      inputs:
+        scriptSource: 'filepath'
+        scriptPath: z3test/scripts/test_benchmarks.py
+        arguments: build-dist/z3 z3test/regressions/smt2
+    - task: CopyFiles@2
+      inputs:
+        sourceFolder: dist
+        contents: '*.zip'
+        targetFolder: $(Build.ArtifactStagingDirectory)
+    - task: PublishPipelineArtifact@0
+      inputs:
+        artifactName: 'UbuntuBuild20'
+        targetPath: $(Build.ArtifactStagingDirectory)
+
   - job: UbuntuDoc
     displayName: "Ubuntu Doc build"
     pool:
@@ -191,6 +220,11 @@ stages:
       inputs:
         artifact: 'UbuntuBuild'
         path: $(Agent.TempDirectory)\package
+    - task: DownloadPipelineArtifact@2
+      displayName: 'Download Ubuntu20 Build'
+      inputs:
+        artifact: 'UbuntuBuild20'
+        path: $(Agent.TempDirectory)\package
     - task: DownloadPipelineArtifact@2
       displayName: 'Download macOS Build'
       inputs:
@@ -436,6 +470,11 @@ stages:
     pool:
       vmImage: "windows-latest"
     steps:
+    - task: DownloadPipelineArtifact@2
+      displayName: 'Download Ubuntu Build'
+      inputs:
+        artifact: 'UbuntuBuild20'
+        path: $(Agent.TempDirectory)
     - task: DownloadPipelineArtifact@2
       displayName: 'Download Ubuntu Build'
       inputs: