add kubectl deploy step

Jenkinsfile

@@ -18,9 +18,14 @@ pipeline {
             }
         }
         stage('deploy') {
+            environment {
+               AWS_ACCESS_KEY_ID = credentials('jenkins_aws_access_key_id')
+               AWS_SECRET_ACCESS_KEY = credentials('jenkins-aws_secret_access_key')
+            }
             steps {
                 script {
                    echo 'deploying docker image...'
+                   sh 'kubectl create deployment nginx-deployment --image=nginx'
                 }
             }
         }