remove certain things and added stuff

Jenkinsfile

@@ -51,8 +51,8 @@ spec:
         - name: NEXUS_URL
           value: "http://nexus-repo-nexus-repository-manager.default.svc.cluster.local:8081/repository/my-helm-repo/"
 
-    - name: docker
-      image: docker:dind
+    - name: custom-docker
+      image: nexus-repo-nexus-repository-manager.default.svc.cluster.local:5000/custom-dind:latest
       workingDir: /home/jenkins/agent
       command: ["/bin/sh", "-c"]
       args: ["sleep 9999999"]
@@ -96,7 +96,7 @@ spec:
         }
         stage('Retrieve docker Environment Variables') {
             steps {
-                container('docker') {
+                container('custom-docker') {
                     script {
                         env.NEXUS_DOCKER_URL = sh(script: 'echo $NEXUS_DOCKER_URL', returnStdout: true).trim()
                         env.NEXUS_DOCKER_PASS = sh(script: 'echo $NEXUS_DOCKER_PASS', returnStdout: true).trim()