Try idea with dockerhub

Jenkinsfile

@@ -22,16 +22,16 @@
 pipeline {
     agent {
         docker { 
-            image 'mcr.microsoft.com/dotnet/sdk:5.0' 
-        }
-        docker {
-            image 'node:12'
+            image 'kargor8/dotnet_node'
         }
     }
     environment {
         DOTNET_CLI_HOME = '/tmp/App'
     }
     stages {
+        stage('Install node') {
+
+        }
         stage('Build') {
             steps {
                 dir('SessionCompanion') {