test unstable?

Jenkinsfile

@@ -52,15 +52,19 @@ pipeline {
           // calcolo il config...
           if (env.BRANCH_NAME == "develop") {
             env.config = "Debug"
+            env.classifier = "-beta"
           }
           else if (env.BRANCH_NAME == "master") {
             env.config = "Release"
+            env.classifier = ""
           }
           // procedo solo se NON si tratta di commit in ramo UnitTesting...
           if (env.BRANCH_NAME != "UnitTesting") {
             // CAMBIO numero versione + checkout NuGet in file sorgente!!!
-            bat "e:\\fart.exe SteamWareLib\\SteamWare.cs 1.0.0.0 ${env.versionNumber} || EXIT /B 0"
+            bat "e:\\fart.exe SteamWareLib\\SteamWare.cs 1.0.0.0 ${env.versionNumber}${env.classifier} || EXIT /B 0"
             bat "e:\\nuget.exe restore ${WORKSPACE}\\SteamWare.sln"
+            // elimino vecchie build...
+            bat "rm -rdf *.nupkg"
             // BUILD!
             bat "\"${tool 'MSBuild-16.0'}\" SteamWareLib\\SteamWare.csproj -target:Build /p:Configuration=${env.config} /p:Platform=\"Any CPU\" /p:OutputPath=bin/${env.config} /m"
             // creo package NuGet...
@@ -77,6 +81,8 @@ pipeline {
             // lancio upload con nuget!
             echo 'Start upload with nuget push'
             bat "e:\\nuget setapikey fe387daa-d07c-3207-877e-96c8be1be91b -source http://nexus.steamware.net/repository/nuget-hosted"
+            // copio come beta...
+
             bat "e:\\nuget.exe  push SteamWare.${env.versionNumber}-beta.nupkg -Source http://nexus.steamware.net/repository/nuget-hosted"
           }
           else if (env.BRANCH_NAME == "master") {