try

Jenkinsfile

@@ -71,7 +71,7 @@ node{
                 karma.run(' -u $(id -u) -v ${WORKSPACE}:/app trion/ng-cli-karma ')
                 karma.inside 
                 {
-                    // sh 'npm install'
+                    sh 'npm install'
                 
                     try 
                     {

angular-client/karma.conf.js

@@ -33,7 +33,7 @@ module.exports = function (config) {
         outputDir: 'target/surefire-reports/TESTS-TestSuite.xml'
     },
     angularCli: {
-      environment: 'dev'
+      environment: 'test'
     },
     reporters: ['progress', 'kjhtml', 'junit'],
     port: 9876,