added Jenkinsfile

Jenkinsfile

@@ -0,0 +1,31 @@
+pipeline {
+  agent any
+  stages {
+    stage('Build') {
+      steps {
+        sh 'dotnet build **/ExtremelySimpleLogger.csproj'
+      }
+    }
+
+    stage('Pack') {
+      steps {
+        sh 'find . -type f -name \\\'*.nupkg\\\' -delete'
+        sh 'dotnet pack **/ExtremelySimpleLogger.csproj --version-suffix ${BUILD_NUMBER}'
+      }
+    }
+
+    stage('Publish') {
+      when { 
+        branch 'master' 
+      }
+      steps {
+        sh '''dotnet nuget push -s http://localhost:5000/v3/index.json **/*.nupkg -k $BAGET -n true
+'''
+      }
+    }
+
+  }
+  environment {
+    BAGET = credentials('3db850d0-e6b5-43d5-b607-d180f4eab676')
+  }
+}