try this

Jenkinsfile

@@ -1,28 +1,24 @@
-pipeline {
-  agent any
+node {
+  def app
 
-  environment {
-    REGISTRY = "docker-registry.service.consul"
-    IMAGE_NAME = "homepage"
+  stage('Clone repository') {
+    checkout scm
   }
 
-  stages {
-    stage('Docker Build') {
-      steps {
-        script {
-          dockerImage = docker.build("$REGISTRY/$IMAGE_NAME")
+  stage('Build image') {
+    app = docker.build("brandonjones085/test")
   }
+
+  stage('Test image') {
+    app.inside {
+      sh 'echo "Tests passed"'
     }
   }
 
-    stage('Docker Publish') {
-      steps {
-        script {
-          docker.withRegistry("http://$REGISTRY") {
-            dockerImage.push("latest")
-          }
-        }
-      }
+  stage('Push image') {
+    docker.withRegistry('https://registry.hub.docker.com', 'git') {
+      app.push("${env.BUILD_NUMBER}")
+      app.push("latest")
     }
   }
 }